Fei Fei, M.D.
NPI 1124551312 · Anatomic Pathology & Clinical Pathology Physician · Duarte, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Fei Fei, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Duarte, CA (NPI 1124551312).
Provider details
- NPI number
- 1124551312
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A164912 (CA)
Specialties & taxonomies
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
9 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
1,868 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) |
|---|---|---|
| Molecular Pathology Procedure; Physician Interpretation and ReportG0452 | 863 | $48 |
| Molecular Pathology Procedure; Physician Interpretation and ReportG0452 | 664 | $48 |
| Preparation of Specimen, Manual88381 | 196 | $24 |
| Preparation of Specimen, Manual88381 | 145 | $24 |
Typical Medicare-allowed amounts for these services range $24–$48 (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.
Practice location
Mailing address
Additional practice locations (1)
- 4900 Rivergrade RdIrwindale, CA 91706-1401Phone: (800) 826-4673
Registry dates
- Enumerated
- 2017-04-05
- Last updated
- 2025-08-27
- Certified
- 2025-08-27
Frequently asked questions
- What is Fei Fei's NPI number?
- Fei Fei's National Provider Identifier (NPI) is 1124551312, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fei Fei's specialty?
- Fei Fei is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Fei Fei located?
- Fei Fei's practice location on file with NPPES is 1500 Duarte Rd, Duarte, CA 91010-3012.
- What is Fei Fei's phone number?
- The practice phone number listed in the NPPES registry for Fei Fei is (800) 826-4673.
- Does Fei Fei accept Medicare?
- Fei Fei is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Fei Fei's NPI active?
- Yes — Fei Fei's NPI (1124551312) is active in the NPPES registry as of the last update on 2025-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.