Nan Wang, M.D.
NPI 1023040839 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Upland, CA
Enrolled with Medicare as Practitioner - Cardiac Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nan Wang, M.D. is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Upland, CA (NPI 1023040839).
Provider details
- NPI number
- 1023040839
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G55739 (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
125 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) |
|---|---|---|
| Coronary Artery Bypass Using Artery Graft, 1 Graft33533 | 25 | $1,383 |
| Ultrasound of Heart With Probe in Esophagus to Assess Heart Pump Function93318 | 24 | $100 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 24 | $220 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 22 | $174 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 19 | $172 |
| Coronary Artery Bypass Using Vein Or Artery Graft, 3 Grafts33519 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,202 across 13 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
- 2006-07-06
- Last updated
- 2017-03-21
Frequently asked questions
- What is Nan Wang's NPI number?
- Nan Wang's National Provider Identifier (NPI) is 1023040839, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nan Wang's specialty?
- Nan Wang is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Nan Wang located?
- Nan Wang's practice location on file with NPPES is 901 San Bernardino Rd, Upland, CA 91786-4912.
- What is Nan Wang's phone number?
- The practice phone number listed in the NPPES registry for Nan Wang is (909) 579-6721.
- Does Nan Wang accept Medicare?
- Nan Wang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nan Wang's NPI active?
- Yes — Nan Wang's NPI (1023040839) is active in the NPPES registry as of the last update on 2017-03-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.