Warren Pan, MD
NPI 1396361549 · Ophthalmology Physician · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Warren Pan, MD is a Ophthalmology Physician provider in Ann Arbor, MI (NPI 1396361549).
Provider details
- NPI number
- 1396361549
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 4351045883 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
54 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) |
|---|---|---|
| Imaging of Retina92134 | 27 | $23 |
| Injection of Drug Into Eye67028 | 15 | $97 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 12 | $66 |
Typical Medicare-allowed amounts for these services range $23–$97 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 102 | 61 |
| Latanoprost | 88 | 38 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 82 | 70 |
| Atropine Sulfate | 79 | 79 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 65 | 31 |
| Cyclosporinebrand: Restasis | 50 | 11 |
| Cyclosporine | 35 | — |
Practice location
Mailing address
Additional practice locations (1)
- 1500 E Medical Center DrAnn Arbor, MI 48109-5000Phone: (734) 936-5582
Registry dates
- Enumerated
- 2020-06-24
- Last updated
- 2024-07-03
- Certified
- 2024-07-03
Frequently asked questions
- What is Warren Pan's NPI number?
- Warren Pan's National Provider Identifier (NPI) is 1396361549, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Warren Pan's specialty?
- Warren Pan is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Warren Pan located?
- Warren Pan's practice location on file with NPPES is 1000 Wall St, Ann Arbor, MI 48105-1912.
- What is Warren Pan's phone number?
- The practice phone number listed in the NPPES registry for Warren Pan is (734) 764-4190.
- Does Warren Pan accept Medicare?
- Warren Pan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Warren Pan's NPI active?
- Yes — Warren Pan's NPI (1396361549) is active in the NPPES registry as of the last update on 2024-07-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.