Active NPI 1205128816 Individual Practitioner Male Practitioner

Dr. Mark Weismiller , MD

Surgery • Saint Johns, MI

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Mark Weismiller, MD is a certified Surgery practicing in Saint Johns, MI. With approximately 15 years of clinical experience since graduating from Wayne State University School Of Medicine in 2011, Dr. Weismiller delivers high-quality medical care to the local community at 901 S OAKLAND ST.

Dr. Weismiller is affiliated with Sparrow Clinton Hospital and accepts Medicare assignment.

Frequently performed procedures and clinical services include new patient outpatient office visit, established patient outpatient office visit, subsequent hospital care with moderate levelof medical decision making, if using time, at least. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

901 S Oakland St
Suite 201

Saint Johns, MI 488792200

Telephone 9892242338

Fax 9892242065

Associated Practice Facility / Clinic

🏢 Sparrow Clinton Hospital Facility NPI 1306893078

Medicare Profile & Education

Medical School

Wayne State University School Of Medicine

Graduation Year

2011

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Saint Johns, MI

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

15 Yrs Matches City Avg

City Avg: 15.0 Yrs

State Avg: 25.8 Yrs

Regional Practice Density

1 Specialists

Practicing in Saint Johns, MI (1479 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

43.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Weismiller (15 Years) 15 Yrs

Saint Johns Specialty Average (15.0 Years) 15.0 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2022)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$187.31	$104.01
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	11	11	$283.00	$164.11

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	38	38	$145.00	$107.76
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	25	25	$221.00	$159.41
99213 Established patient office or other outpatient visit, typically 15 minutes	22	21	$101.00	$89.52
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	22	14	$97.27	$70.87
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	16	16	$861.63	$253.29
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	15	15	$186.00	$134.15
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	14	14	$146.00	$127.32
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	12	12	$272.67	$197.36
99221 Initial hospital inpatient care per day, typically 30 minutes	11	11	$137.45	$99.59

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	33	19	$97.39	$72.55
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	25	25	$220.76	$156.90
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	20	19	$146.00	$103.57
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	19	19	$145.42	$101.28
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	19	18	$185.21	$138.38
99213 Established patient office or other outpatient visit, typically 15 minutes	17	15	$100.18	$73.59
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	14	14	$832.43	$261.78
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	12	12	$677.58	$107.49

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	39	39	$220.00	$160.50
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	39	18	$98.00	$71.92
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	37	36	$146.00	$105.57
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	35	35	$146.00	$101.19
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	32	32	$790.00	$260.85
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	24	22	$183.00	$135.47
99213 Established patient office or other outpatient visit, typically 15 minutes	15	13	$99.00	$64.34
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	11	11	$274.00	$199.96

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	41	41	$145.39	$103.97
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	31	20	$97.29	$71.40
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	22	18	$144.45	$103.70
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	20	20	$220.00	$159.12
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	20	20	$183.00	$134.31
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	14	13	$593.00	$173.96
47562 Removal of gallbladder using an endoscope	14	14	$860.86	$460.92
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	12	11	$273.00	$198.97
45380 Biopsy of large bowel using an endoscope	12	12	$751.00	$157.28
99213 Established patient office or other outpatient visit, typically 15 minutes	11	11	$97.45	$70.09

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	39	20	$96.00	$70.41
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	34	34	$144.00	$103.72
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes	24	24	$183.00	$133.61
99213 Established patient office or other outpatient visit, typically 15 minutes	14	12	$96.00	$69.90
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	12	12	$142.00	$96.79

Medical Specialties & State Licenses

CMS Verified: 2022-11-08

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License MI 4301098816

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.

Hospital & Practice Group Affiliations

Sparrow Clinton Hospital

805 S Oakland St, St Johns, MI 488792253

Phone: 9892273345

Practice Associates & Co-Workers

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

6 Associated Practitioners

Dr. Gregory Holzhei , DO

Family Medicine

NPI 1073585444

Doctor of Osteopathic Medicine (D.O.)

Stephanie Schmitt , NP-C

Nurse Practitioner - Family

NPI 1396497525

Nurse Practitioner (Certified)

Dr. Kay Mclaughlin , DO

Internal Medicine

NPI 1407827868

Doctor of Osteopathic Medicine (D.O.)

Dr. Werner Hollstein , MD

Family Medicine

NPI 1649248998

Doctor of Medicine (M.D.)

Dr. Whitnee Essenmacher , MD

Family Medicine

NPI 1831707595

Doctor of Medicine (M.D.)

Laura Fanning

Nurse Practitioner - Family

NPI 1851886469

Career & Practice History Timeline

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

7 Historical Events

👤

Provider Name / Credentials Updated November 08, 2022

Recorded as MARK WEISMILLER, MD

✅

NPI Profile Active July 20, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location July 20, 2016

Registered at 901 S OAKLAND ST, SUITE 201, SAINT JOHNS, MI 488792200 (Tel: 9892242338)

📍

Updated Business Mailing Address July 20, 2016

Registered at PO BOX 13008, LANSING, MI 489013008 (Tel: 9892242338)

👤

Provider Name / Credentials Updated July 20, 2016

Recorded as MARK WEISMILLER

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 20, 2016

Surgery (License #4301098816 in MI)

🟢

Initial NPI Registration & Enumeration May 15, 2011

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: 1205128816

Entity Type:

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

Enumeration Date: May 15, 2011

Last Update: November 08, 2022

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 13008

Lansing, MI 489013008

Phone: 9892242338

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.