Mary A. Ross, PA-C
Physician Assistant · Chickasha, OK
Mary A. Ross, PA-C is a physician assistant with a practice address in Chickasha, Oklahoma, and NPI 1457654519, issued on Dec 13, 2010. Check the license (Oklahoma 1949, as entered in NPPES) with the Oklahoma board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary A. Ross
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 1949 OK
Self-reported in NPPES; status is on the state search - Practice location
- 2100 W Iowa Ave, Chickasha, OK 73018
- Phone
- (405) 224-2100
- Enumerated
- Dec 13, 2010
- Record last updated
- Aug 16, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (405) 779-2244
- Medicaid ID
- 200315730A OK
- Medicare enrollment
- Enrolled (PECOS I20110427000607); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 1,870 in Oklahoma → Look up another NPI →
Also registered at 2100 W Iowa Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin Anderson, D.O.Family Medicine Physician1154655157
- Erin Armstrong, PAPhysician Assistant1700755766
- Anupama Bekkem, M.D.Internal Medicine Physician1326074485
- Delanie Berry, MS, RN, APRN, FNP-CFamily Nurse Practitioner1699199984
- Gary Boyer, D.O.Occupational Medicine Physician1982763249
- Bridget Bryan, D.O.Pediatrics Physician1982925913
Verify Mary A. Ross in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oklahoma board licenses this profession
Search for license 1949Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average physician assistant in 2024
141 Medicare Part D claims for 35 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Progesterone70 claims
- Estradiol43 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
- Kimberly M Weaver MD PCArdmore, OK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary A. Ross among 1,870 physician assistant records in Oklahoma
Mary A. Ross, PA-C is one of 1,870 physician assistant records with a practice address in Oklahoma. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 33% of them.
- NPI issued2010 · 33% of these records are older, 65% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2010 · median 2017 among the 1,246 with a school on file
- Record last updated2016 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 physician assistant records list a practice address in Chickasha
They are 10 of the 354 NPPES records with a practice address in Chickasha, and 1,870 physician assistant records in Oklahoma.
All 1,870 in Oklahoma → Every provider in Chickasha → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Erin Armstrong, PAChickasha, OK 730181700755766
- Jacob Boyd, PA-CChickasha, OK 730181003656448
- Laura Kadechuk, PA-CChickasha, OK 730181669775714
- Diadra Lorseh, PA-CChickasha, OK 730181275859621
- Devon Muncy, PA-CChickasha, OK 730181285688325
- William Ohl, P.A.Chickasha, OK 730181528094653
- Andrea Roberts, PAChickasha, OK 730181144278573
- Marjorie Schlecht, PACChickasha, OK 730181649320334
Common questions
What is Mary A. Ross, PA-C's NPI number?
Mary A. Ross, PA-C's National Provider Identifier (NPI) is 1457654519, issued on Dec 13, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mary A. Ross, PA-C located?
The NPPES record lists a practice address at 2100 W Iowa Ave, Chickasha, OK, 73018. Phone: (405) 224-2100. Providers update this record themselves, so call before visiting.
How can I verify Mary A. Ross, PA-C's license?
NPPES lists Oklahoma license number 1949, as entered by the provider. Search the Oklahoma board that licenses this profession; the NPPES record confirms identity only.
How much does Mary A. Ross, PA-C prescribe under Medicare Part D?
In 2024, Mary A. Ross, PA-C had 141 Medicare Part D claims for 35 beneficiaries; the average among physician assistant prescribers was 830. 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.