Helen Feng, MD
NPI 1629174149 · Rheumatology Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Helen Feng, MD is a Rheumatology Physician provider in San Jose, CA (NPI 1629174149).
Provider details
- NPI number
- 1629174149
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- G85995 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,670 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 855 | $77 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 810 | $221 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 502 | $62 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 419 | $18 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 385 | $72 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 381 | 103 |
| Prednisone | 149 | 45 |
| Methotrexate Sodiumbrand: Methotrexate | 136 | 40 |
| Alendronate Sodium | 110 | 26 |
| Icosapent Ethylbrand: Vascepa | 99 | 31 |
| Denosumabbrand: Prolia | 95 | 56 |
| Leucovorin Calcium | 85 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$6,021 across 211 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-15
- Last updated
- 2023-03-07
Frequently asked questions
- What is Helen Feng's NPI number?
- Helen Feng's National Provider Identifier (NPI) is 1629174149, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Feng's specialty?
- Helen Feng is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Helen Feng located?
- Helen Feng's practice location on file with NPPES is 2242 Camden Ave, San Jose, CA 95124-2029.
- What is Helen Feng's phone number?
- The practice phone number listed in the NPPES registry for Helen Feng is (408) 963-6359.
- Does Helen Feng accept Medicare?
- Helen Feng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Helen Feng's NPI active?
- Yes — Helen Feng's NPI (1629174149) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.