Charlotte Yang, MD
NPI 1669479580 · Family Medicine Physician · Bay City, MI
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charlotte Yang, MD is a Family Medicine Physician provider in Bay City, MI (NPI 1669479580).
Provider details
- NPI number
- 1669479580
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 4301076817 (MI)
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
20 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
2,668 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 867 | $86 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 413 | $16 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 384 | $123 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 356 | $18 |
| Urinalysis, Manual Test81002 | 174 | $3 |
| Administration of Influenza Virus VaccineG0008 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 162 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,178 | 334 |
| Levothyroxine Sodium | 724 | 191 |
| Amlodipine Besylate | 541 | 148 |
| Lisinopril | 524 | 144 |
| Metformin Hcl | 410 | 112 |
| Omeprazole | 385 | 110 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$70 across 3 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
- 2005-07-07
- Last updated
- 2025-11-24
- Certified
- 2025-11-24
Frequently asked questions
- What is Charlotte Yang's NPI number?
- Charlotte Yang's National Provider Identifier (NPI) is 1669479580, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charlotte Yang's specialty?
- Charlotte Yang is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charlotte Yang located?
- Charlotte Yang's practice location on file with NPPES is 912 S Euclid Ave, Bay City, MI 48706-3307.
- What is Charlotte Yang's phone number?
- The practice phone number listed in the NPPES registry for Charlotte Yang is (989) 667-6780.
- Does Charlotte Yang accept Medicare?
- Charlotte Yang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charlotte Yang's NPI active?
- Yes — Charlotte Yang's NPI (1669479580) is active in the NPPES registry as of the last update on 2025-11-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.