Active NPI 1407828684 Individual Practitioner Male Practitioner

Dr. Simon John Warren , MD

Pathology - Dermatopathology • Ann Arbor, MI

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Simon Warren, MD is a certified Pathology - Dermatopathology practicing in Ann Arbor, MI. With approximately 33 years of clinical experience since completing medical education in 1993, Dr. Warren delivers high-quality medical care to the local community at 1500 E MEDICAL CENTER DR.

Dr. Warren is affiliated with Regents Of The University Of Michigan and accepts Medicare assignment.

Frequently performed procedures and clinical services include pathology examination of tissue using a microscope, intermediate complexity, special stained specimen slides to examine tissue, special stained specimen slides to examine tissue, initial procedure. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1500 E Medical Center Dr

Ann Arbor, MI 481095000

Telephone 7349364000

Associated Practice Facility / Clinic

🏢 Regents Of The University Of Michigan Facility NPI 1003878539

Medicare Profile & Education

Medical School

Other

Graduation Year

1993

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Pathology - Dermatopathology in Ann Arbor, MI

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

33 Yrs -5.0 yrs vs City Avg

City Avg: 38.0 Yrs

State Avg: 26.5 Yrs

Regional Practice Density

3 Specialists

Practicing in Ann Arbor, MI (13 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

75.5% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Warren (33 Years) 33 Yrs

Ann Arbor Specialty Average (38.0 Years) 38.0 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
88305 Pathology examination of tissue using a microscope, intermediate complexity	616	440	$143.25	$34.58
88341 Special stained specimen slides to examine tissue	95	30	$95.62	$26.17
88342 Special stained specimen slides to examine tissue, initial procedure	59	50	$137.47	$32.47
88304 Pathology examination of tissue using a microscope, moderately low complexity	24	21	$86.96	$10.43
88321 Surgical pathology consultation and report on referred slides prepared elsewhere	21	20	$384.43	$81.63
88321 Surgical pathology consultation and report on referred slides prepared elsewhere	15	14	$220.00	$76.28

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,065	717	$109.69	$34.83
88341 Special stained specimen slides to examine tissue	114	33	$60.00	$26.43
88341 Special stained specimen slides to examine tissue	78	12	$60.00	$26.46
88342 Special stained specimen slides to examine tissue, initial procedure	68	60	$112.00	$32.62
88312 Special stained specimen slides to identify organisms including interpretation and report	54	36	$85.00	$24.86
88305 Pathology examination of tissue using a microscope, intermediate complexity	41	35	$117.61	$34.89
88304 Pathology examination of tissue using a microscope, moderately low complexity	38	35	$73.95	$10.54
88321 Surgical pathology consultation and report on referred slides prepared elsewhere	20	20	$220.00	$78.12
88342 Special stained specimen slides to examine tissue, initial procedure	15	13	$112.00	$32.65
88313 Special stained specimen slides to examine tissue including interpretation and report	13	11	$75.00	$11.21

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,222	783	$109.23	$35.57
88341 Special stained specimen slides to examine tissue	93	30	$60.00	$26.46
88350 Antibody evaluation, each additional single antibody stain procedure	84	17	$75.95	$27.74
88342 Special stained specimen slides to examine tissue, initial procedure	82	63	$112.00	$32.50
88312 Special stained specimen slides to identify organisms including interpretation and report	70	47	$85.00	$24.88
88304 Pathology examination of tissue using a microscope, moderately low complexity	35	34	$84.43	$10.21
88305 Pathology examination of tissue using a microscope, intermediate complexity	32	22	$126.00	$35.57
88321 Surgical pathology consultation and report on referred slides prepared elsewhere	24	23	$220.00	$77.37
88346 Antibody evaluation, initial single antibody stain procedure	21	17	$84.29	$34.41

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,317	831	$107.05	$36.20
88341 Special stained specimen slides to examine tissue	153	42	$60.00	$27.39
88305 Pathology examination of tissue using a microscope, intermediate complexity	145	106	$109.06	$36.25
88342 Special stained specimen slides to examine tissue, initial procedure	82	69	$112.00	$33.64
88350 Antibody evaluation, each additional single antibody stain procedure	68	14	$76.18	$28.29
88304 Pathology examination of tissue using a microscope, moderately low complexity	65	58	$85.92	$10.98
88312 Special stained specimen slides to identify organisms including interpretation and report	48	30	$85.00	$25.67
88321 Surgical pathology consultation and report on referred slides prepared elsewhere	38	38	$220.00	$80.63
88341 Special stained specimen slides to examine tissue	29	12	$60.00	$27.55
88342 Special stained specimen slides to examine tissue, initial procedure	18	18	$112.00	$34.01
88346 Antibody evaluation, initial single antibody stain procedure	17	14	$86.47	$35.09
88323 Surgical pathology consultation and report on referred material requiring preparation of slides	15	15	$240.00	$84.91
88313 Special stained specimen slides to examine tissue including interpretation and report	11	11	$75.00	$11.68

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,082	677	$113.36	$37.75
88305 Pathology examination of tissue using a microscope, intermediate complexity	438	292	$104.05	$37.93
88350 Antibody evaluation, each additional single antibody stain procedure	110	27	$75.29	$29.11
88341 Special stained specimen slides to examine tissue	89	17	$60.00	$28.47
88341 Special stained specimen slides to examine tissue	76	23	$60.00	$28.43
88342 Special stained specimen slides to examine tissue, initial procedure	57	53	$112.00	$35.38
88350 Antibody evaluation, each additional single antibody stain procedure	52	16	$75.38	$29.18
88312 Special stained specimen slides to identify organisms including interpretation and report	44	31	$85.00	$26.65
88304 Pathology examination of tissue using a microscope, moderately low complexity	40	35	$73.50	$11.29
88321 Surgical pathology consultation and report on referred slides prepared elsewhere	36	34	$220.00	$81.65
88342 Special stained specimen slides to examine tissue, initial procedure	36	34	$112.00	$35.52
88346 Antibody evaluation, initial single antibody stain procedure	29	27	$77.69	$36.12
88323 Surgical pathology consultation and report on referred material requiring preparation of slides	22	22	$240.00	$87.97
88312 Special stained specimen slides to identify organisms including interpretation and report	21	14	$85.00	$26.71
88346 Antibody evaluation, initial single antibody stain procedure	16	16	$79.88	$36.20

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,826	1,172	$109.01	$37.54
88305 Pathology examination of tissue using a microscope, intermediate complexity	242	161	$104.64	$37.27
88341 Special stained specimen slides to examine tissue	161	56	$60.00	$28.31
88342 Special stained specimen slides to examine tissue, initial procedure	109	94	$112.00	$35.05
88350 Antibody evaluation, each additional single antibody stain procedure	103	25	$75.31	$28.57
88312 Special stained specimen slides to identify organisms including interpretation and report	85	45	$85.00	$25.96
88304 Pathology examination of tissue using a microscope, moderately low complexity	84	79	$71.07	$11.14
88341 Special stained specimen slides to examine tissue	83	17	$60.00	$28.47
88350 Antibody evaluation, each additional single antibody stain procedure	68	17	$75.47	$28.55
88321 Surgical pathology consultation and report on referred slides prepared elsewhere	32	32	$220.00	$82.06
88346 Antibody evaluation, initial single antibody stain procedure	27	26	$79.33	$35.99
88342 Special stained specimen slides to examine tissue, initial procedure	22	21	$112.00	$35.20
88313 Special stained specimen slides to examine tissue including interpretation and report	19	14	$75.00	$11.92
88346 Antibody evaluation, initial single antibody stain procedure	18	18	$81.50	$35.97
88323 Surgical pathology consultation and report on referred material requiring preparation of slides	11	11	$240.00	$87.13

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,506	969	$103.09	$37.81
88305 Pathology examination of tissue using a microscope, intermediate complexity	161	122	$101.99	$37.73
88350 Antibody evaluation, each additional single antibody stain procedure	120	25	$75.00	$28.85
88341 Special stained specimen slides to examine tissue	114	13	$58.95	$27.64
88341 Special stained specimen slides to examine tissue	111	37	$60.00	$28.44
88312 Special stained specimen slides to identify organisms including interpretation and report	81	48	$85.00	$24.78
88342 Special stained specimen slides to examine tissue, initial procedure	79	66	$112.00	$35.49
88350 Antibody evaluation, each additional single antibody stain procedure	65	16	$75.98	$28.86
88304 Pathology examination of tissue using a microscope, moderately low complexity	64	57	$67.89	$11.52
88312 Special stained specimen slides to identify organisms including interpretation and report	32	11	$85.00	$26.75
88346 Antibody evaluation, initial single antibody stain procedure	31	26	$75.00	$36.11
88321 Surgical pathology consultation and report on referred slides prepared elsewhere	30	29	$220.00	$82.95
88342 Special stained specimen slides to examine tissue, initial procedure	18	17	$112.00	$34.10
88346 Antibody evaluation, initial single antibody stain procedure	17	16	$84.18	$36.15

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,159	778	$104.43	$37.60
88305 Pathology examination of tissue using a microscope, intermediate complexity	1,041	676	$110.85	$37.82
88341 Special stained specimen slides to examine tissue	154	31	$48.00	$28.21
88350 Antibody evaluation, each additional single antibody stain procedure	133	29	$76.08	$28.81
88312 Special stained specimen slides to identify organisms including interpretation and report	106	50	$85.00	$27.04
88341 Special stained specimen slides to examine tissue	83	20	$48.00	$28.40
88342 Special stained specimen slides to examine tissue, initial procedure	62	49	$110.00	$34.90
88342 Special stained specimen slides to examine tissue, initial procedure	61	52	$110.00	$35.47
88321 Surgical pathology consultation and report on referred slides prepared elsewhere	61	59	$220.00	$83.35
88312 Special stained specimen slides to identify organisms including interpretation and report	60	29	$85.00	$27.04
88304 Pathology examination of tissue using a microscope, moderately low complexity	56	45	$81.70	$11.52
88346 Antibody evaluation, initial single antibody stain procedure	34	29	$79.12	$36.38
88304 Pathology examination of tissue using a microscope, moderately low complexity	26	25	$71.54	$11.29
88323 Surgical pathology consultation and report on referred material requiring preparation of slides	13	13	$240.00	$86.75
88346 Antibody evaluation, initial single antibody stain procedure	12	11	$80.83	$36.38

Medical Specialties & State Licenses

CMS Verified: 2024-10-15

Pathology - Dermatopathology Primary Specialty

NUCC Taxonomy Code: 207ZD0900X

State License MI 4301512285

A dermatopathologist is an expert in diagnosing and monitoring diseases of the skin including infectious, immunologic, degenerative, and neoplastic diseases. This entails the examination and interpretation of specially prepared tissue sections, cellular scrapings, and smears of skin lesions by means of light microscopy, electron microscopy, and fluorescence microscopy.

Specialist

NUCC Taxonomy Code: 174400000X

State License FL ME93737

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

Pathology - Anatomic Pathology & Clinical Pathology

NUCC Taxonomy Code: 207ZP0102X

State License IN 01065084A

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

200894770 (IN)

Medicaid State Provider ID

030682700 (FL)

Hospital & Practice Group Affiliations

Regents Of The University Of Michigan

2800 Plymouth Rd, Ann Arbor, MI 481092800

Phone: 7349364000

Secondary Practice Locations

635 Barnhill Dr # A128

Indianapolis, IN 462025126

Phone: 3172744806

Practice Associates & Co-Workers

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

40 Associated Practitioners

Dr. Sameer Saini , MD

Internal Medicine - Gastroenterology

NPI 1003039124

Doctor of Medicine (M.D.)

Dr. Kyle Perry , MD

Pathology - Cytopathology

NPI 1003053901

Doctor of Medicine (M.D.)

Dr. Michael Watson , MD

Pediatrics - Pediatric Infectious Diseases

NPI 1003092040

Doctor of Medicine (M.D.)

Denise Berry , CRNA

Nurse Anesthetist, Certified Registered

NPI 1003128356

Certified Registered Nurse Anesthetist

Dr. Ketti Petersen , MD

Family Medicine - Hospice and Palliative Medicine

NPI 1003128919

Doctor of Medicine (M.D.)

Katherine Mccormack , PA-C

Physician Assistant

NPI 1003167321

Physician Assistant (Certified)

Career & Practice History Timeline

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

8 Historical Events

📍

Updated Practice Location October 15, 2024

Registered at 1500 E MEDICAL CENTER DR, ANN ARBOR, MI 481095000 (Tel: 7349364000)

📍

Updated Business Mailing Address October 15, 2024

Registered at 3621 S STATE ST, ANN ARBOR, MI 481081633 (Tel: 7346475299)

✅

NPI Profile Active June 27, 2008

NPI status registered as active in NPPES database

📍

Updated Practice Location June 27, 2008

Registered at 635 BARNHILL DR # A128, INDIANAPOLIS, IN 462025126 (Tel: 3172744806)

📍

Updated Business Mailing Address June 27, 2008

Registered at 635 BARNHILL DR # A128, INDIANAPOLIS, IN 462025126 (Tel: 3172744806)

👤

Provider Name / Credentials Updated June 27, 2008

Recorded as SIMON WARREN, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 27, 2008

Specialist (License #ME93737 in FL)

🟢

Initial NPI Registration & Enumeration February 02, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews

No patient reviews submitted yet for Dr. Simon Warren. Be the first to share your experience!

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1407828684

Entity Type:

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

Enumeration Date: February 02, 2006

Last Update: October 15, 2024

Sole Proprietor: No

Update or Correct Profile

Mailing Address

3621 S State St

Ann Arbor, MI 481081633

Phone: 7346475299

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.