FRANK CHIHYANG CHEN (M.D.) – Family Medicine Physician, NPI 1104010586
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
13,194 FAMILY PRACTICE in CA
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Provider Addresses for FRANK CHIHYANG CHEN (M.D.)
1800, 31st Avenue, Sunset District, San Francisco, California, 94122, United States
SAN FRANCISCO, CA 94122
Phone: (415) 677-2388
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 20 Open Payments records for all available years, with a total value of $619.
Total Amount is formed as General ($619) + Research ($0) + Ownership ($0) = $619.
Last reported payment date: 2024-12-19 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($138).
Total Amount
$619
General + Research + Ownership
Payments
20
Total payment records
General Amount
$619
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-19
Latest reported date
Top Companies
Largest payers in this snapshot
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2015-07-02
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20150702000036 | I | Family Practice | CA | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 344 | 112 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 86 | 66 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 86 | 86 | $0 |
| G0444 | Annual depression screening, 5 to 15 minutes | 68 | 68 | $0 |
| 90686 | Influenza vaccine, quadrivalent, preservative free, 0.5 ml dosage | 63 | 63 | $0 |
Insurance plans in this area (ZIP 94122)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Medical Oncology | CA | |
| Nurse Practitioner | CA | |
| Nurse Practitioner | CA | |
| - | CA | |
| Registered Dietitian Or Nutrition Professional | CA | |
| O T O L A R Y N G O L O G Y | CA | |
| Family Practice | CA | |
| - | CA | |
| Pulmonary Disease, Critical Care (Intensivists) | CA | |
| Internal Medicine, Cardiovascular Disease (Cardiology) | CA |
Reviews
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