May Fan, M.D.
NPI 1457462939 · Family Medicine Physician · Sisters, OR
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
May Fan, M.D. is a Family Medicine Physician provider in Sisters, OR (NPI 1457462939).
Provider details
- NPI number
- 1457462939
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD16867 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
2,053 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 567 | $127 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 307 | $129 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 196 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 173 | $90 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 121 | $13 |
| Hemoglobin A1c Level83036 | 100 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 100 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 495 | 151 |
| Levothyroxine Sodium | 396 | 117 |
| Rosuvastatin Calcium | 288 | 93 |
| Amlodipine Besylate | 279 | 85 |
| Lisinopril | 267 | 83 |
| Gabapentin | 240 | 72 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2022-01-22
- Certified
- 2022-01-22
Frequently asked questions
- What is May Fan's NPI number?
- May Fan's National Provider Identifier (NPI) is 1457462939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is May Fan's specialty?
- May Fan is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is May Fan located?
- May Fan's practice location on file with NPPES is 231 E Cascade Ave, Sisters, OR 97759-1140.
- What is May Fan's phone number?
- The practice phone number listed in the NPPES registry for May Fan is (541) 382-4900.
- Does May Fan accept Medicare?
- May Fan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is May Fan's NPI active?
- Yes — May Fan's NPI (1457462939) is active in the NPPES registry as of the last update on 2022-01-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.