NPPES file of Aug 9, 2026

Mary Ann Buchanan, FNP-C

Nurse Practitioner · Tulsa, OK

Mary Ann Buchanan, FNP-C is a nurse practitioner with a practice address in Tulsa, Oklahoma, and NPI 1942015946, issued on Feb 8, 2025. Check the license (Oklahoma 221587, as entered in NPPES) with the Oklahoma board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1942015946
Name
Mary Ann Buchanan
Credential
FNP-C
Primary taxonomy
Nurse Practitioner 363L00000X
License numbers
221587 OK
1184001 TX
Self-reported in NPPES; status is on the state search
Practice location
2488 E 81St St Ste 2000, Tulsa, OK 74137
Phone
(918) 592-9020
Enumerated
Feb 8, 2025
Record last updated
Jan 5, 2026
Medicare enrollment
Enrolled (PECOS I20260602004562); may accept Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest nurse practitioner records → All 700 in Oklahoma → Look up another NPI →

Also registered at 2488 E 81St St Ste 2000

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Maryanne Bolt, APRNNurse Practitioner1912378050
  2. Eric Canaday, D.O.Emergency Medicine Physician1972802254
  3. Matthew Carmichael, D.O.Emergency Medical Services (Emergency Medicine) Physician1205147998
  4. Cathryn Crittenden-Byers, MDPediatric Emergency Medicine (Emergency Medicine) Physician1912955493
  5. Thomas Denmark, M.D.Family Medicine Physician1881629079

Verify Mary Ann Buchanan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Oklahoma board licenses this profession
    Search for license 221587    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Oklahoma license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Mary Ann Buchanan among 700 nurse practitioner records in Oklahoma

Mary Ann Buchanan, FNP-C is one of 700 nurse practitioner records with a practice address in Oklahoma. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2025, is newer than 95% of them.

  • NPI issued2025 · 95% of these records are older, 2% newer
  • In a Medicare fileNo · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 57% of these records are
  • Graduated2024 · median 2017 among the 399 with a school on file
  • Record last updated2026 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nurse Practitioner providers in Oklahoma

There are 700 nurse practitioner records in Oklahoma. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 700 in Oklahoma → Every provider in Tulsa → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Maryanne Bolt, APRNTulsa, OK 741371912378050
  2. Charlotte Coachman, A.R.N.P.Tulsa, OK 741371710909700
  3. Linda Ellard, APRNTulsa, OK 741371265948269
  4. Jenny Guthrie, APRN CNPTulsa, OK 741371881662666
  5. Daniel Lee, NP-CTulsa, OK 741371003396904
  6. Ashley Mahaffey, NPTulsa, OK 741371346825593
  7. Matthew Marble, APRN-CNP MSNTulsa, OK 741371548898935
  8. Jeffrey Stephens, ARNPTulsa, OK 741371336451269

Common questions

What is Mary Ann Buchanan, FNP-C's NPI number?

Mary Ann Buchanan, FNP-C's National Provider Identifier (NPI) is 1942015946, issued on Feb 8, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Mary Ann Buchanan, FNP-C located?

The NPPES record lists a practice address at 2488 E 81St St Ste 2000, Tulsa, OK, 74137. Phone: (918) 592-9020. Providers update this record themselves, so call before visiting.

How can I verify Mary Ann Buchanan, FNP-C's license?

NPPES lists Oklahoma license number 221587, as entered by the provider. Search the Oklahoma board that licenses this profession; the NPPES record confirms identity 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.