Mary Wang, MD
NPI 1669564811 · Internal Medicine Physician · Rowland Heights, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Wang, MD is a Internal Medicine Physician provider in Rowland Heights, CA (NPI 1669564811).
Provider details
- NPI number
- 1669564811
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A61785 (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
1,349 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 | 711 | $99 |
| Advance Care Planning, First 30 Minutes99497 | 94 | $87 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 93 | $140 |
| Insertion of Needle Into Vein (3 Years Or Older)36410 | 91 | $19 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 87 | $21 |
| Annual, Face-To-Face Intensive Behavioral Therapy for Cardiovascular Disease, Individual, 15 MinutesG0446 | 87 | $27 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 94 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 705 | 224 |
| Amlodipine Besylate | 439 | 123 |
| Losartan Potassium | 370 | 106 |
| Metformin Hcl | 310 | 82 |
| Alendronate Sodium | 209 | 65 |
| Icosapent Ethylbrand: Vascepa | 166 | 36 |
| Omeprazole | 128 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,296 across 56 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
- 2006-09-28
- Last updated
- 2012-02-09
Frequently asked questions
- What is Mary Wang's NPI number?
- Mary Wang's National Provider Identifier (NPI) is 1669564811, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Wang's specialty?
- Mary Wang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Wang located?
- Mary Wang's practice location on file with NPPES is 18395 Colima Rd, Rowland Heights, CA 91748-2749.
- What is Mary Wang's phone number?
- The practice phone number listed in the NPPES registry for Mary Wang is (626) 964-1120.
- Does Mary Wang accept Medicare?
- Mary Wang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Wang's NPI active?
- Yes — Mary Wang's NPI (1669564811) is active in the NPPES registry as of the last update on 2012-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.