May Chan, M.D.
NPI 1639318223 · Anatomic Pathology Physician · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
May Chan, M.D. is a Anatomic Pathology Physician provider in Ann Arbor, MI (NPI 1639318223).
Provider details
- NPI number
- 1639318223
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 232305 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,488 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 599 | $35 |
| Surgical Pathology Consultation and Report on Referred Slides Prepared Elsewhere88321 | 219 | $81 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 204 | $26 |
| Antibody Evaluation, Each Additional Single Antibody Stain Procedure88350 | 152 | $27 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 134 | $33 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 58 | $78 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-02-05
- Last updated
- 2011-08-26
Frequently asked questions
- What is May Chan's NPI number?
- May Chan's National Provider Identifier (NPI) is 1639318223, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is May Chan's specialty?
- May Chan is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is May Chan located?
- May Chan's practice location on file with NPPES is 1500 E Medical Center Drive, Ann Arbor, MI 48109-5054.
- What is May Chan's phone number?
- The practice phone number listed in the NPPES registry for May Chan is (800) 862-7284.
- Does May Chan accept Medicare?
- May Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is May Chan's NPI active?
- Yes — May Chan's NPI (1639318223) is active in the NPPES registry as of the last update on 2011-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.