Active NPI 1477554277 Individual Practitioner Male Practitioner

Dr. Timothy Matthew Iseri , MD

Surgery • Cadillac, MI

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Timothy Iseri, MD is a certified Surgery practicing in Cadillac, MI. With approximately 31 years of clinical experience since graduating from Oregon Health Sciences University School Of Medicine in 1995, Dr. Iseri delivers high-quality medical care to the local community at 927 CARMEL ST.

Dr. Iseri is affiliated with Munson Healthcare Cadillac and accepts Medicare assignment.

Frequently performed procedures and clinical services include removal of polyps or growths of large bowel using an endoscope with mechanical snare, established patient outpatient office visit, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

927 Carmel St

Cadillac, MI 496012547

Telephone 2318763876

Fax 2317751115

Associated Practice Facility / Clinic

🏢 Cadillac Surgical Care Pc Facility NPI 1295769024

Medicare Profile & Education

Medical School

Oregon Health Sciences University School Of Medicine

Graduation Year

1995

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Cadillac, MI

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

31 Yrs +5.2 yrs vs City Avg

City Avg: 25.8 Yrs

State Avg: 25.8 Yrs

Regional Practice Density

6 Specialists

Practicing in Cadillac, MI (1479 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

64.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Iseri (31 Years) 31 Yrs

Cadillac Specialty Average (25.8 Years) 25.8 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	40	40	$749.25	$237.32
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	33	30	$188.82	$121.38
99213 Established patient office or other outpatient visit, typically 15 minutes	32	31	$130.31	$85.72
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	24	24	$326.96	$75.50
45380 Biopsy of large bowel using an endoscope	22	22	$471.36	$117.71
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	14	14	$1090.57	$421.72

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	89	73	$187.00	$123.84
45380 Biopsy of large bowel using an endoscope	53	53	$693.74	$129.15
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	52	52	$449.12	$87.96
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	42	40	$908.21	$241.56
99213 Established patient office or other outpatient visit, typically 15 minutes	37	36	$129.00	$85.03
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	18	18	$182.78	$108.77
45378 Diagnostic exam of large bowel using a flexible endoscope	18	18	$664.11	$172.96
99202 New patient office or other outpatient visit, typically 20 minutes	17	17	$131.00	$69.70
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	16	16	$120.00	$52.08
45380 Biopsy of large bowel using an endoscope	16	16	$1029.00	$280.91
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	14	14	$217.07	$128.23
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	14	14	$928.57	$300.63
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	13	13	$427.69	$173.11
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	12	12	$1123.67	$438.07

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	94	63	$187.00	$124.08
45380 Biopsy of large bowel using an endoscope	71	70	$1040.00	$89.52
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	54	52	$1213.00	$248.55
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	52	51	$120.00	$53.22
99202 New patient office or other outpatient visit, typically 20 minutes	51	51	$131.00	$69.79
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	42	42	$185.00	$108.12
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	42	41	$912.00	$80.09
45380 Biopsy of large bowel using an endoscope	27	27	$1040.00	$307.76
99231 Follow-up hospital inpatient care per day, typically 15 minutes	25	14	$100.00	$37.98
99153 Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes	25	24	$30.00	$10.18
99213 Established patient office or other outpatient visit, typically 15 minutes	22	21	$129.00	$88.49
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	16	16	$1213.00	$453.28
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	12	12	$200.00	$132.45
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	11	11	$900.00	$278.71

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	139	105	$150.00	$125.96
99213 Established patient office or other outpatient visit, typically 15 minutes	91	73	$108.00	$89.06
45380 Biopsy of large bowel using an endoscope	72	71	$1040.00	$113.13
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	65	63	$844.20	$86.06
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	51	50	$1213.00	$244.96
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	50	49	$120.00	$54.78
99202 New patient office or other outpatient visit, typically 20 minutes	49	49	$129.00	$71.21
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	47	47	$174.00	$110.24
99153 Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes	24	22	$30.00	$10.01
45380 Biopsy of large bowel using an endoscope	17	17	$1040.00	$297.98
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	15	15	$200.00	$134.37
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	14	14	$1213.00	$456.58
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	12	12	$841.50	$378.11
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	11	11	$682.00	$116.65
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	11	11	$51.00	$21.82

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	196	141	$150.00	$105.98
45380 Biopsy of large bowel using an endoscope	67	67	$1040.00	$111.46
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	65	63	$120.00	$53.15
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	52	52	$1213.00	$257.96
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	47	47	$783.00	$83.14
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	44	44	$174.00	$105.32
45380 Biopsy of large bowel using an endoscope	35	35	$1040.00	$221.40
99231 Follow-up hospital inpatient care per day, typically 15 minutes	34	18	$100.00	$39.44
99153 Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes	32	25	$29.38	$10.04
99213 Established patient office or other outpatient visit, typically 15 minutes	27	25	$108.00	$71.78
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	25	25	$1213.00	$438.48
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	21	21	$200.00	$138.25
99202 New patient office or other outpatient visit, typically 20 minutes	20	20	$129.00	$74.64
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	19	19	$250.00	$155.08
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	15	15	$783.00	$314.15
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	12	11	$51.00	$22.21

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	121	85	$108.00	$71.50
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	119	93	$150.00	$103.94
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	100	95	$120.00	$53.82
45380 Biopsy of large bowel using an endoscope	66	65	$1040.00	$107.84
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	61	61	$1213.00	$261.35
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	59	59	$783.00	$97.23
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	46	46	$174.00	$104.04
99231 Follow-up hospital inpatient care per day, typically 15 minutes	36	20	$100.00	$39.06
99153 Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes	32	30	$25.00	$9.94
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	27	26	$1213.00	$424.12
45380 Biopsy of large bowel using an endoscope	26	25	$1040.00	$219.93
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	25	25	$783.00	$334.68
91035 Monitoring and recording of esophageal function through a capsule attached to the esophagus wall	22	22	$1083.00	$456.57
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	21	14	$51.00	$21.70
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	18	17	$200.00	$135.73
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	18	18	$682.00	$251.13
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	12	12	$1133.00	$181.25
99221 Initial hospital inpatient care per day, typically 30 minutes	11	11	$140.00	$100.65

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	268	178	$108.00	$69.87
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	86	86	$120.00	$54.60
45380 Biopsy of large bowel using an endoscope	74	74	$1040.00	$116.64
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	66	64	$783.00	$83.80
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	64	57	$150.00	$103.86
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	61	61	$1213.00	$258.97
99231 Follow-up hospital inpatient care per day, typically 15 minutes	57	24	$100.00	$38.52
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	42	42	$174.00	$104.34
99153 Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes	31	24	$25.00	$10.13
45378 Diagnostic exam of large bowel using a flexible endoscope	31	31	$1133.00	$185.26
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	27	27	$1213.00	$410.52
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	27	27	$200.00	$134.21
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	21	18	$51.00	$20.41
45380 Biopsy of large bowel using an endoscope	19	19	$1040.00	$227.81
91035 Monitoring and recording of esophageal function through a capsule attached to the esophagus wall	17	17	$1083.00	$451.34
43249 Balloon dilation of esophagus using an endoscope	16	15	$401.00	$131.18
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	16	16	$783.00	$316.18
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	15	15	$1767.00	$691.40
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	14	13	$682.00	$120.08
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	13	13	$1133.00	$168.97
45378 Diagnostic exam of large bowel using a flexible endoscope	13	13	$1133.00	$285.05

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	281	187	$108.00	$67.98
99231 Follow-up hospital inpatient care per day, typically 15 minutes	102	49	$100.00	$37.12
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	89	86	$783.00	$79.33
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	79	79	$120.00	$52.68
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	53	53	$1213.00	$249.78
45380 Biopsy of large bowel using an endoscope	50	50	$1040.00	$126.06
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	47	46	$1213.00	$376.70
45378 Diagnostic exam of large bowel using a flexible endoscope	47	46	$1133.00	$180.49
99221 Initial hospital inpatient care per day, typically 30 minutes	40	39	$140.00	$96.01
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	37	35	$150.00	$99.76
99153 Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes	35	29	$27.71	$9.78
99152 Moderate sedation services by physician also performing a procedure, patient 5 years of age or older, first 15 minutes	29	28	$120.00	$46.65
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	26	26	$174.00	$99.29
45380 Biopsy of large bowel using an endoscope	26	26	$1040.00	$249.27
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	18	18	$200.00	$129.34
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	18	17	$783.00	$313.31
43249 Balloon dilation of esophagus using an endoscope	17	17	$401.00	$128.63
45378 Diagnostic exam of large bowel using a flexible endoscope	16	16	$1133.00	$283.98
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope	13	12	$682.00	$119.92
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	13	13	$1767.00	$688.90

Medical Specialties & State Licenses

CMS Verified: 2026-02-20

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License MI 4301065506

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Surgery

NUCC Taxonomy Code: 208600000X

State License OR MD22588

Surgery

NUCC Taxonomy Code: 208600000X

State License ID M7982

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

288205 (OR)

Medicaid State Provider ID

805805300 (ID)

Medicaid State Provider ID

4890725 (MI)

Commercial Insurance / Payer ID Bcbs

020H310060

Hospital & Practice Group Affiliations

Munson Healthcare Cadillac

927 S Carmel St, Cadillac, MI 496012547

Phone: 2318763876

Secondary Practice Locations

7665 S Us 131 Hwy

Cadillac, MI 49601

Phone: 2318767526

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

9 Associated Practitioners

Christin Johnson , NP

Nurse Practitioner

NPI 1063707263

Nurse Practitioner

Dr. Kent Bowden , DO

Surgery

NPI 1164550372

Doctor of Osteopathic Medicine (D.O.)

Dr. Daniel Swiriduk , DPM

Podiatrist

NPI 1346274172

Doctor of Podiatric Medicine

Dr. Louis Tegtmeyer , DO

Surgery

NPI 1407834898

Doctor of Osteopathic Medicine (D.O.)

Madeline Adams , FNP

Nurse Practitioner - Family

NPI 1417563073

Family Nurse Practitioner

Dr. Benjamin Roose , MD

Surgery

NPI 1609286509

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) February 20, 2026

Surgery (License #4301065506 in MI)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) December 21, 2020

Surgery (License #MD22588 in OR)

✅

NPI Profile Active October 02, 2012

NPI status registered as active in NPPES database

📍

Updated Practice Location October 02, 2012

Registered at 927 CARMEL ST, CADILLAC, MI 496012547 (Tel: 2318763876)

📍

Updated Business Mailing Address October 02, 2012

Registered at 927 S CARMEL ST, CADILLAC, MI 496012547

👤

Provider Name / Credentials Updated October 02, 2012

Recorded as TIMOTHY ISERI, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 02, 2012

Surgery (License #4301065506 in MI)

🟢

Initial NPI Registration & Enumeration August 03, 2005

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1477554277

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: August 03, 2005

Last Update: February 20, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

927 S Carmel St

Cadillac, MI 496012547

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.