Nancy Ellen Grayson, MD
Psychiatry Physician · Kingfisher, OK
Nancy Ellen Grayson, MD is a psychiatry physician with a practice address in Kingfisher, Oklahoma, and NPI 1386625762, issued on Nov 10, 2005. Check the license (Oklahoma 17590, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Nancy Ellen Grayson
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 17590 OK
Self-reported in NPPES; status is on the state search - Practice location
- 25353 E 840 RD, Kingfisher, OK 73750
- Phone
- (918) 808-3306
- Enumerated
- Nov 10, 2005
- Record last updated
- Mar 30, 2023
- Fax
- (888) 504-7682
- Medicaid ID
- 1117590 OK
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 463 in Oklahoma → Look up another NPI →
Verify Nancy Ellen Grayson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 17590Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average psychiatry physician in 2024
142 Medicare Part D claims for 13 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Clozapine17 claims
- Lamotrigine17 claims
- Fluvoxamine Maleate13 claims
- Lithium Carbonate Er12 claims
- Propranolol Hcl Er12 claims
- Risperidone11 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.
Nancy Ellen Grayson among 463 psychiatry physician records in Oklahoma
Nancy Ellen Grayson, MD is one of 463 psychiatry physician records with a practice address in Oklahoma. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 96% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · 46% of these records are
- Record last updated2023 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Oklahoma
There are 463 psychiatry physician records in Oklahoma.
All 463 in Oklahoma → Every provider in Kingfisher → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Michael Feldman, MDEnid, OK 737031861472185
- Lisa Matson, M.D.Enid, OK 737031083683569
- Patrick Herd, MDFort Supply, OK 738411982782181
- William Mitchell, M.DFort Supply, OK 738411083787709
- Dukheh Ahn, M.D.Clinton, OK 736011255342416
- Steven Koehl, D.O.Altus, OK 735231073824421
- Wallace Heller, MDAltus, OK 735211023015583
- William Davies, MDLawton, OK 735071790895894
Common questions
What is Nancy Ellen Grayson, MD's NPI number?
Nancy Ellen Grayson, MD's National Provider Identifier (NPI) is 1386625762, issued on Nov 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Nancy Ellen Grayson, MD located?
The NPPES record lists a practice address at 25353 E 840 RD, Kingfisher, OK, 73750. Phone: (918) 808-3306. Providers update this record themselves, so call before visiting.
How can I verify Nancy Ellen Grayson, MD's license?
NPPES lists Oklahoma license number 17590, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nancy Ellen Grayson, MD prescribe under Medicare Part D?
In 2024, Nancy Ellen Grayson, MD had 142 Medicare Part D claims for 13 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.