Eric Mao, M.D.
NPI 1043503295 · Gastroenterology Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Eric Mao, M.D. is a Gastroenterology Physician provider in Sacramento, CA (NPI 1043503295).
Provider details
- NPI number
- 1043503295
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A147641 (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 tenure25% of score
15 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
361 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 119 | $145 |
| 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 | 64 | $17 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 43 | $245 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 39 | $106 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 39 | $184 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ustekinumabbrand: Stelara | 125 | 17 |
| Upadacitinibbrand: Rinvoq | 67 | — |
| Risankizumab-Rzaabrand: Skyrizi On-Body | 50 | — |
| Adalimumabbrand: Humira(cf) Pen | 46 | — |
| Mesalamine | 46 | 13 |
| Adalimumabbrand: Humira Pen | 43 | — |
| Peg3350/Sod Sulf,bicarb,cl/Kcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$117 across 1 record (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
- 2011-05-20
- Last updated
- 2022-01-31
- Certified
- 2022-01-31
Frequently asked questions
- What is Eric Mao's NPI number?
- Eric Mao's National Provider Identifier (NPI) is 1043503295, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Eric Mao's specialty?
- Eric Mao is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Eric Mao located?
- Eric Mao's practice location on file with NPPES is 3160 Folsom Blvd Ste 3500, Sacramento, CA 95816-5270.
- What is Eric Mao's phone number?
- The practice phone number listed in the NPPES registry for Eric Mao is (916) 734-8616.
- Does Eric Mao accept Medicare?
- Eric Mao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Eric Mao's NPI active?
- Yes — Eric Mao's NPI (1043503295) is active in the NPPES registry as of the last update on 2022-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.