Mara Posner, D.O
Gastroenterology Physician · Las Vegas, NV
Mara Posner, D.O is a gastroenterology physician with a practice address in Las Vegas, Nevada, and NPI 1477765634, issued on May 3, 2007. Check the license (Nevada DO 1494, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mara Posner
- Credential
- D.O
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- DO 1494 NV
Self-reported in NPPES; status is on the state search - Practice location
- 4750 W Oakey Blvd Ste 3B, Las Vegas, NV 89102
- Phone
- (702) 877-5199
- Enumerated
- May 3, 2007
- Record last updated
- Jun 4, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicaid ID
- 1477765634 NV
- Medicare enrollment
- Enrolled (PECOS I20120917000535); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 119 in Nevada → Look up another NPI →
Also registered at 4750 W Oakey Blvd Ste 3B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elvira Prifti, APRNNurse Practitioner1942848429
Verify Mara Posner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license DO 1494Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average gastroenterology physician in 2024
1,844 Medicare Part D claims for 477 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Omeprazole412 claims
- Dicyclomine Hcl266 claims
- Famotidine162 claims
- Pantoprazole Sodium141 claims
- Gavilyte-G68 claims
- Ondansetron Odt63 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Optum Medical Group II Rhodes P CLas Vegas, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mara Posner among 119 gastroenterology physician records in Nevada
Mara Posner, D.O is one of 119 gastroenterology physician records with a practice address in Nevada. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 56% of them.
- NPI issued2007 · 56% of these records are older, 33% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated2001 · median 1998 among the 92 with a school on file
- Record last updated2020 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Nevada
There are 119 gastroenterology physician records in Nevada.
All 119 in Nevada → Every provider in Las Vegas → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Peter Airel, M.D.Las Vegas, NV 891021538222047
- Jose Aponte-Pieras, MDLas Vegas, NV 891021528591740
- Henry Chiu, M.D.Las Vegas, NV 891021487820965
- Kenneth Chow, MDLas Vegas, NV 891021912588955
- Vignan Manne, MDLas Vegas, NV 891021346660420
- Gordon Ohning, MDLas Vegas, NV 891021316967961
- Chaorui Tian, M.D., PH.D.Las Vegas, NV 891021801057625
- Nicholas Tibaldi, M.D.Las Vegas, NV 891021760478564
Common questions
What is Mara Posner, D.O's NPI number?
Mara Posner, D.O's National Provider Identifier (NPI) is 1477765634, issued on May 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mara Posner, D.O located?
The NPPES record lists a practice address at 4750 W Oakey Blvd Ste 3B, Las Vegas, NV, 89102. Phone: (702) 877-5199. Providers update this record themselves, so call before visiting.
How can I verify Mara Posner, D.O's license?
NPPES lists Nevada license number DO 1494, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mara Posner, D.O prescribe under Medicare Part D?
In 2024, Mara Posner, D.O had 1,844 Medicare Part D claims for 477 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.