Maryanne A. Hannaney, MD
Obstetrics & Gynecology Physician · Riverton, WY
Maryanne A. Hannaney, MD is an obstetrics & gynecology physician with a practice address in Riverton, Wyoming, and NPI 1497797260, issued on Jun 13, 2006. Check the license (Wyoming 6798A, as entered in NPPES) on the Wyoming Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Maryanne A. Hannaney
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 6798A WY
Self-reported in NPPES; status is on the state search - Practice location
- 2300 Gasser RD., Riverton, WY 82501
- Phone
- (307) 856-4232
- Enumerated
- Jun 13, 2006
- Record last updated
- Jun 4, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (307) 856-4243
- Medicaid ID
- 118601900 WY
- Medicare enrollment
- Enrolled (PECOS I20171226001662); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 72 in Wyoming → Look up another NPI →
Verify Maryanne A. Hannaney in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWyoming Board of Medicine
Search for license 6798ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Obhg California PCPasadena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maryanne A. Hannaney among 72 obstetrics & gynecology physician records in Wyoming
Maryanne A. Hannaney, MD is one of 72 obstetrics & gynecology physician records with a practice address in Wyoming. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 47% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1975 · median 2000 among the 46 with a school on file
- Record last updated2013 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Wyoming practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Wyoming
There are 72 obstetrics & gynecology physician records in Wyoming.
All 72 in Wyoming → Every provider in Riverton → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- James Brubaker, M.D.Lander, WY 825201245326867
- Thomas Dunaway, MDLander, WY 825201457454837
- Ken Holt, D.O.Lander, WY 825201104894047
- Jan Siebersma, M.D.Lander, WY 825201952303216
- Karla Wagner, M.D.Lander, WY 825201942395652
- Jenkins Clarkson, MDPowell, WY 824351861500654
- Robert Ellis, M.D.Powell, WY 824351003805698
- James Lloyd, M.D.Powell, WY 824351588977250
Common questions
What is Maryanne A. Hannaney, MD's NPI number?
Maryanne A. Hannaney, MD's National Provider Identifier (NPI) is 1497797260, issued on Jun 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Maryanne A. Hannaney, MD located?
The NPPES record lists a practice address at 2300 Gasser RD., Riverton, WY, 82501. Phone: (307) 856-4232. Providers update this record themselves, so call before visiting.
How can I verify Maryanne A. Hannaney, MD's license?
NPPES lists Wyoming license number 6798A, as entered by the provider. Search the Wyoming Board of Medicine at https://wyomedboard.wyo.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
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.