Maia Eng, M.D.
NPI 1043604515 · Cardiovascular Disease Physician · Napa, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maia Eng, M.D. is a Cardiovascular Disease Physician provider in Napa, CA (NPI 1043604515).
Provider details
- NPI number
- 1043604515
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A145087 (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
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,272 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 589 | $139 |
| Nuclear Medicine Studies of Heart Muscle at Rest and With Stress and Spect78452 | 320 | $81 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 208 | $182 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 143 | $9 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 119 | $73 |
| Ultrasound of Heart With Probe in Esophagus, With Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 152 | 44 |
| Metoprolol Succinate | 133 | 43 |
| Rosuvastatin Calcium | 126 | 38 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 120 | 44 |
| Apixabanbrand: Eliquis | 112 | 28 |
| Amlodipine Besylate | 111 | 32 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,967 across 42 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
Additional practice locations (1)
- 4150 V St#1110Sacramento, CA 95817Phone: (916) 734-2737
Registry dates
- Enumerated
- 2015-03-23
- Last updated
- 2023-09-05
- Certified
- 2023-09-05
Frequently asked questions
- What is Maia Eng's NPI number?
- Maia Eng's National Provider Identifier (NPI) is 1043604515, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maia Eng's specialty?
- Maia Eng is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Maia Eng located?
- Maia Eng's practice location on file with NPPES is 1100 Trancas St Ste 240, Napa, CA 94558-2909.
- What is Maia Eng's phone number?
- The practice phone number listed in the NPPES registry for Maia Eng is (707) 253-1036.
- Does Maia Eng accept Medicare?
- Maia Eng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maia Eng's NPI active?
- Yes — Maia Eng's NPI (1043604515) is active in the NPPES registry as of the last update on 2023-09-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.