Erjun Wang, M.D.
NPI 1962599340 · Hospitalist Physician · Davis, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erjun Wang, M.D. is a Hospitalist Physician provider in Davis, CA (NPI 1962599340).
Provider details
- NPI number
- 1962599340
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A84068 (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
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
956 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 483 | $120 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 175 | $118 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 83 | $175 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Supervision By Physician93016 | 47 | $22 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Review By Physician93018 | 47 | $14 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 30 | 16 |
| Ondansetronbrand: Ondansetron Odt | 24 | 22 |
| Pantoprazole Sodium | 22 | 18 |
| Apixabanbrand: Eliquis | 17 | 11 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 13 | 13 |
| Tamsulosin Hcl | 11 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-06
- Last updated
- 2015-07-10
Frequently asked questions
- What is Erjun Wang's NPI number?
- Erjun Wang's National Provider Identifier (NPI) is 1962599340, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erjun Wang's specialty?
- Erjun Wang is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Erjun Wang located?
- Erjun Wang's practice location on file with NPPES is 2000 Sutter Pl, Davis, CA 95616-6201.
- What is Erjun Wang's phone number?
- The practice phone number listed in the NPPES registry for Erjun Wang is (530) 750-5226.
- Does Erjun Wang accept Medicare?
- Erjun Wang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erjun Wang's NPI active?
- Yes — Erjun Wang's NPI (1962599340) is active in the NPPES registry as of the last update on 2015-07-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.