Mara Posner, D.O
NPI 1477765634 · Gastroenterology Physician · Las Vegas, NV
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mara Posner, D.O is a Gastroenterology Physician provider in Las Vegas, NV (NPI 1477765634).
Provider details
- NPI number
- 1477765634
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O
- Sex
- Female
- Sole proprietor
- No
- License
- DO 1494 (NV)
Specialties & taxonomies
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
185 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 87 | $119 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 40 | $231 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 34 | $88 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 24 | $163 |
Typical Medicare-allowed amounts for these services range $88–$231 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
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 |
|---|---|---|
| Omeprazole | 412 | 137 |
| Dicyclomine Hcl | 266 | 96 |
| Famotidine | 162 | 48 |
| Pantoprazole Sodium | 141 | 48 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 68 | 65 |
| Ondansetronbrand: Ondansetron Odt | 63 | 15 |
| Rabeprazole Sodium | 57 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-03
- Last updated
- 2020-06-04
- Certified
- 2020-06-04
Frequently asked questions
- What is Mara Posner's NPI number?
- Mara Posner's National Provider Identifier (NPI) is 1477765634, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mara Posner's specialty?
- Mara Posner is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mara Posner located?
- Mara Posner's practice location on file with NPPES is 4750 W Oakey Blvd Ste 3b, Las Vegas, NV 89102-1535.
- What is Mara Posner's phone number?
- The practice phone number listed in the NPPES registry for Mara Posner is (702) 877-5199.
- Does Mara Posner accept Medicare?
- Mara Posner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mara Posner's NPI active?
- Yes — Mara Posner's NPI (1477765634) is active in the NPPES registry as of the last update on 2020-06-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.