NPPES file of Aug 9, 2026

Colleen Flanagan, CRNP

Gerontology Nurse Practitioner · Baltimore, MD

Colleen Flanagan, CRNP is a gerontology nurse practitioner with a practice address in Baltimore, Maryland, and NPI 1275356529, issued on Nov 5, 2024. Check the license (Maryland R100678, 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
1275356529
Name
Colleen Flanagan
Credential
CRNP
Primary taxonomy
Gerontology Nurse Practitioner 363LG0600X
License number
R100678 MD
Self-reported in NPPES; status is on the state search
Practice location
22 S. Green St., Baltimore, MD 21021
Phone
(443) 928-0075
Enumerated
Nov 5, 2024
Record last updated
Nov 5, 2024
Medicare enrollment
Enrolled (PECOS I20250328003112); 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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Also registered at 22 S. Green St.

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

  1. Tara Chadwick, M.D., MPHObstetrics & Gynecology Physician1003233206
  2. Mackenzie Isbell, MDPediatrics Physician1053007013
  3. Silke Niederhaus, M.D.Transplant Surgery Physician1639127293

Verify Colleen Flanagan 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 R100678
    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. Gilchrist Hospice Care IncBaltimore, MD

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

Gerontology Nurse Practitioner providers in Maryland

There are 199 gerontology nurse practitioner records in Maryland.

Other gerontology nurse practitioner records in Maryland

  1. Aderonke AbatanCrofton, MD1174197040
  2. Jessica Abrams, CRNPNorth Potomac, MD1003277245
  3. Bobbie Adams, AGNPSilver Spring, MD1407503154
  4. Laraba AdejoWindsor Mill, MD1225762990
  5. Eric Anapolsky, CRNPElkridge, MD1790832301
  6. Suzette Anderson, CRNPPrince Frederick, MD1386258929
  7. Susan Anthony, CRNP, MSBaltimore, MD1346271657
  8. Samson Arigbamu, CRNPOwings Mills, MD1033620398
  9. Rosemond Bartels, NPClinton, MD1326561333
  10. Dmitry Bederak, DNP, CRNPBaltimore, MD1194490250

Common questions

What is Colleen Flanagan, CRNP's NPI number?

Colleen Flanagan, CRNP's National Provider Identifier (NPI) is 1275356529, issued on Nov 5, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Colleen Flanagan, CRNP located?

The NPPES record lists a practice address at 22 S. Green St., Baltimore, MD, 21021. Phone: (443) 928-0075. Providers update this record themselves, so call before visiting.

How can I verify Colleen Flanagan, CRNP's license?

NPPES lists Maryland license number R100678, 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.

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.