Registry data as of Aug 27, 2026

Diane Witkowski

Nurse Practitioner · Frederick, MD

Diane Witkowski is a nurse practitioner with a practice address in Frederick, Maryland, and NPI 1720483456, issued on Oct 23, 2014. Check the license with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1720483456
Name
Diane Witkowski
Primary taxonomy
Nurse Practitioner 363L00000X
Practice location
617 W Patrick St, Frederick, MD 21701
Phone
(240) 405-8084
Enumerated
Oct 23, 2014
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 617 W Patrick St

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

  1. Caroline Cantrell, LCSW-CClinical Social Worker1467855007
  2. Michael Knable, D.O.Psychiatry Physician1033133087
  3. Jason Moehringer, PSY.D.Psychologist1841650678
  4. Annie Quinlan, ATRProfessional Counselor1184031718

Verify Diane Witkowski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maryland board licenses this professionCheck 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.

2 hospital and facility affiliations

  1. Blue Sky Mental Health Clinic LLCSilver Spring, MD
  2. Lake Linganore Psychiatry, PLLCFrederick, MD

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Nurse Practitioner providers in Maryland

There are 1,273 nurse practitioner records in Maryland.

All 1,273 in Maryland → Every provider in Frederick →

Other nurse practitioner records in Maryland

  1. Deepa Abhilash, CRNPSalisbury, MD1831718972
  2. Meron AbiyRockville, MD1497622419
  3. Krystal Abucevicz-Swick, CRNPCumberland, MD1750867362
  4. Lilian AchiBowie, MD1376406686
  5. Ann AcostaWaldorf, MD1386267011
  6. Hajara AdebowaleGlen Burnie, MD1265161491
  7. Olajumoke Adeleke, NPLanham, MD1053203760
  8. Ilene Ademola, NPCatonsville, MD1194590869
  9. Omobolanle Adenuga, CRNP-FEllicott City, MD1336796465
  10. Taiwo AdeyemoLaurel, MD1669945879

Common questions

What is Diane Witkowski's NPI number?

Diane Witkowski's National Provider Identifier (NPI) is 1720483456, issued on Oct 23, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Diane Witkowski located?

The NPPES record lists a practice address at 617 W Patrick St, Frederick, MD, 21701. Phone: (240) 405-8084. Providers update this record themselves, so call before visiting.

How can I verify Diane Witkowski's license?

Search the Maryland board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.