NPPES file of Aug 9, 2026

Nathan Anicas Walker, M.D.

Sleep Medicine (Psychiatry & Neurology) Physician · Chapel Hill, NC

Nathan Anicas Walker, M.D. is a sleep medicine (psychiatry & neurology) physician with a practice address in Chapel Hill, North Carolina, and NPI 1992119879, issued on Jun 18, 2014. Check the license (North Carolina 2020-02678, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1992119879
Name
Nathan Anicas Walker
Credential
M.D.
Primary taxonomy
Sleep Medicine (Psychiatry & Neurology) Physician 2084S0012X
License number
2020-02678 NC
Self-reported in NPPES; status is on the state search
Practice location
101 Manning Drive, Chapel Hill, NC 27599
Phone
(919) 966-8162
Enumerated
Jun 18, 2014
Record last updated
Jun 17, 2022
Medicare enrollment
Enrolled (PECOS I20200819001007); accepts 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 sleep medicine (psychiatry & neurology) physician records → All 19 in North Carolina → Look up another NPI →

Also registered at 101 Manning Drive

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

  1. Samuel Belgique, MDStudent in an Organized Health Care Education/Training Program1427750470
  2. Emily ChenGeneral Practice Dentistry1760064646
  3. Pinyu Chen, MDStudent in an Organized Health Care Education/Training Program1437951027
  4. Stephanie Davis, MDPediatric Pulmonology Physician1790873735
  5. Jeremy InterranteAnesthesiology Physician1346860756
  6. Jacob Johnson, M.D.Neonatal-Perinatal Medicine Physician1497198634

Verify Nathan Anicas Walker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNorth Carolina Medical Board
    Search for license 2020-02678    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
Open the North Carolina 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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68% fewer Medicare Part D claims than the average sleep medicine (psychiatry & neurology) physician in 2024

207 Medicare Part D claims for 52 beneficiaries, against an average of 655 among the 377 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Nathan Walker207
  2. Specialty average655

Most prescribed

  1. Gabapentin75 claims
  2. Memantine Hcl21 claims
  3. Armodafinil15 claims
  4. Vyvanse11 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

  1. University OF North Carolina AT Chapel HillChapel Hill, NC

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Nathan Anicas Walker among 19 sleep medicine (psychiatry & neurology) physician records in North Carolina

Nathan Anicas Walker, M.D. is one of 19 sleep medicine (psychiatry & neurology) physician records with a practice address in North Carolina. 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 2014, is newer than 84% of them.

  • NPI issued2014 · 84% of these records are older, 11% newer
  • In a Medicare fileYes · 89% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2013 · median 1997 among the 14 with a school on file
  • Record last updated2022 · 26% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084S0012X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Sleep Medicine (Psychiatry & Neurology) Physician providers in North Carolina

There are 19 sleep medicine (psychiatry & neurology) physician records in North Carolina.

All 19 in North Carolina → Every provider in Chapel Hill → Sleep Medicine (Psychiatry & Neurology) Physician nationwide →

The 8 sleep medicine (psychiatry & neurology) physician records with the nearest ZIP codes

  1. Alexander IsmailChapel Hill, NC 275991659945947
  2. Yvette Cook, M.D.Raleigh, NC 276071710932819
  3. Sushrusha Arjyal, MDMorrisville, NC 275601871858316
  4. Marjorie Soltis, MDDurham, NC 277051396109427
  5. Daniel Garber, M.D.Concord, NC 280251801997259
  6. Mark Letica, MDConcord, NC 280251457315558
  7. John Chewning, M.D.Winston Salem, NC 271031780798652
  8. Anne Stupka, NPWinston Salem, NC 271031982646600

Common questions

What is Nathan Anicas Walker, M.D.'s NPI number?

Nathan Anicas Walker, M.D.'s National Provider Identifier (NPI) is 1992119879, issued on Jun 18, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Nathan Anicas Walker, M.D. located?

The NPPES record lists a practice address at 101 Manning Drive, Chapel Hill, NC, 27599. Phone: (919) 966-8162. Providers update this record themselves, so call before visiting.

How can I verify Nathan Anicas Walker, M.D.'s license?

NPPES lists North Carolina license number 2020-02678, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Nathan Anicas Walker, M.D. prescribe under Medicare Part D?

In 2024, Nathan Anicas Walker, M.D. had 207 Medicare Part D claims for 52 beneficiaries; the average among sleep medicine (psychiatry & neurology) physician prescribers was 655. 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.

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.