NPPES file of Aug 9, 2026

Callie Elizabeth Williams, DNP, AGNP-C

Nurse Practitioner · Towson, MD

Callie Elizabeth Williams, DNP, AGNP-C is a nurse practitioner with a practice address in Towson, Maryland, and NPI 1336022417, issued on Jul 28, 2025. Check the license (Maryland R242805, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1336022417
Name
Callie Elizabeth Williams
Credential
DNP, AGNP-C
Primary taxonomy
Nurse Practitioner 363L00000X
License number
R242805 MD
Self-reported in NPPES; status is on the state search
Practice location
6565 N Charles St, Towson, MD 21204
Phone
(443) 849-3400
Enumerated
Jul 28, 2025
Record last updated
Jan 22, 2026
Medicare enrollment
Enrolled (PECOS I20260121000489); 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 nurse practitioner records → All 1,248 in Maryland → Look up another NPI →

Also registered at 6565 N Charles St

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

  1. Etse Akpako, MDStudent in an Organized Health Care Education/Training Program1346090925
  2. Kayla AmrheinPhysician Assistant1730727678
  3. David Attalla, M.DStudent in an Organized Health Care Education/Training Program1376994160
  4. Olufunmilayo Bayode, MDInternal Medicine Physician1619132552
  5. Marie Chatham, M.D.Pulmonary Disease Physician1104916691
  6. Stephen Geckle, PA-CMedical Physician Assistant1295861805

Verify Callie Elizabeth Williams in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maryland board licenses this profession
    Search for license R242805    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 Maryland 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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Bills Medicare through one group practice

  1. Greater Baltimore Medical Center IncBaltimore, MD

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

Callie Elizabeth Williams among 1,248 nurse practitioner records in Maryland

Callie Elizabeth Williams, DNP, AGNP-C is one of 1,248 nurse practitioner records with a practice address in Maryland. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 92% of them.

  • NPI issued2025 · 92% of these records are older, 2% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileYes · 52% of these records are
  • Graduated2025 · median 2018 among the 655 with a school on file
  • Record last updated2026 · 48% 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 Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Nurse Practitioner providers in Maryland

There are 1,248 nurse practitioner records in Maryland.

All 1,248 in Maryland → Every provider in Towson → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Sherry Cohen, CRNP-F, APRN-PMHBaltimore, MD 212041164471348
  2. Eileen Ehudin Beard, NPBaltimore, MD 212041619027877
  3. Beth Emami, CRNPBaltimore, MD 212041417986365
  4. Elizabeth Galik, RN CRNP PHDBaltimore, MD 212041124028261
  5. Marian Grant, CRNPBaltimore, MD 212041528022415
  6. Mary Jo Holloran, CRNPTowson, MD 212041558375600
  7. Gloria HsuBaltimore, MD 212041326143876
  8. Virginia Jump, C.R.N.P.Towson, MD 212041700937000

Common questions

What is Callie Elizabeth Williams, DNP, AGNP-C's NPI number?

Callie Elizabeth Williams, DNP, AGNP-C's National Provider Identifier (NPI) is 1336022417, issued on Jul 28, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Callie Elizabeth Williams, DNP, AGNP-C located?

The NPPES record lists a practice address at 6565 N Charles St, Towson, MD, 21204. Phone: (443) 849-3400. Providers update this record themselves, so call before visiting.

How can I verify Callie Elizabeth Williams, DNP, AGNP-C's license?

NPPES lists Maryland license number R242805, as entered by the provider. Search the Maryland 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. 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.