Esther Molnar, MD
NPI 1831456896 · Infectious Disease Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Esther Molnar, MD is a Infectious Disease Physician provider in Walnut Creek, CA (NPI 1831456896).
Provider details
- NPI number
- 1831456896
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A147419 (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
14 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
1,228 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 | 766 | $135 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 169 | $197 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 155 | $90 |
| Critical Care, First 30-74 Minutes99291 | 93 | $237 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 27 | $156 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
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) |
|---|---|
| Doxycycline Monohydrate | 19 |
| Amikacin Liposomal/Neb.accessrbrand: Arikayce | 18 |
| Tenofovir Disoproxil Fumarate | 16 |
| Ertapenem Sodiumbrand: Ertapenem | 14 |
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 12 |
| Bedaquiline Fumaratebrand: Sirturo | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-04-16
- Last updated
- 2025-03-03
- Certified
- 2025-03-03
Frequently asked questions
- What is Esther Molnar's NPI number?
- Esther Molnar's National Provider Identifier (NPI) is 1831456896, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Esther Molnar's specialty?
- Esther Molnar is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Esther Molnar located?
- Esther Molnar's practice location on file with NPPES is 365 Lennon Ln Ste 200, Walnut Creek, CA 94598-5912.
- What is Esther Molnar's phone number?
- The practice phone number listed in the NPPES registry for Esther Molnar is (925) 947-2334.
- Does Esther Molnar accept Medicare?
- Esther Molnar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Esther Molnar's NPI active?
- Yes — Esther Molnar's NPI (1831456896) is active in the NPPES registry as of the last update on 2025-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.