NPPES file of Aug 9, 2026

Denise Johnstone, MSN, CRNP

Family Nurse Practitioner · Washington, DC

Denise Johnstone, MSN, CRNP is a family nurse practitioner with a practice address in Washington, District of Columbia, and NPI 1245239276, issued on Jul 20, 2005. Check the license (District of Columbia RN965339, as entered in NPPES) with the District of Columbia 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
1245239276
Name
Denise Johnstone
Credential
MSN, CRNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
RN965339 DC
Self-reported in NPPES; status is on the state search
Practice location
2150 Pennsylvania Ave NW, Washington, DC 20037
Phone
(202) 741-3398
Enumerated
Jul 20, 2005
Record last updated
Jul 13, 2026
Fax
(202) 741-3398
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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8 nearest family nurse practitioner records → All 682 in District of Columbia → Look up another NPI →

Also registered at 2150 Pennsylvania Ave NW

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

  1. Ahmad AalamStudent in an Organized Health Care Education/Training Program1851786909
  2. Nawaf Abaalkhail, MDCritical Care Medicine (Internal Medicine) Physician1104246958
  3. Theophilus Abah, MDAnesthesiology Physician1245810696
  4. Yoosif Abdalla, MDNephrology Physician1679851760
  5. Rim Abdallah, M.D.Student in an Organized Health Care Education/Training Program1962896886
  6. Rami AbdulbakiAnatomic Pathology & Clinical Pathology Physician1851950109

Verify Denise Johnstone in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich District of Columbia board licenses this profession
    Search for license RN965339    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 District of Columbia 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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Denise Johnstone among 682 family nurse practitioner records in District of Columbia

Denise Johnstone, MSN, CRNP is one of 682 family nurse practitioner records with a practice address in District of Columbia. 65% 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 99% newer
  • In a Medicare fileNo · 65% of these records are
  • In the CMS Doctors and Clinicians fileNo · 46% of these records are
  • Record last updated2026 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

675 family nurse practitioner records list a practice address in Washington

They are 675 of the 45,857 NPPES records with a practice address in Washington, and 682 family nurse practitioner records in District of Columbia. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 682 in District of Columbia → Every provider in Washington → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Marylynn Aminrazavi, NPWashington, DC 200371750573242
  2. Brenda Blue, FNPWashington, DC 200371770602583
  3. Jacqueline Cadena, NPWashington, DC 200371073562054
  4. Kara Couch, NPWashington, DC 200371972502169
  5. Karen Degerberg, FNP, MSNWashington, DC 200371932320108
  6. Donna Gray, FNPWashington, DC 200371437279239
  7. Susan Haney, FNP, MAWashington, DC 200371043431976
  8. Cameron Hogg, FNPWashington, DC 200371508891383

Common questions

What is Denise Johnstone, MSN, CRNP's NPI number?

Denise Johnstone, MSN, CRNP's National Provider Identifier (NPI) is 1245239276, issued on Jul 20, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Denise Johnstone, MSN, CRNP located?

The NPPES record lists a practice address at 2150 Pennsylvania Ave NW, Washington, DC, 20037. Phone: (202) 741-3398. Providers update this record themselves, so call before visiting.

How can I verify Denise Johnstone, MSN, CRNP's license?

NPPES lists District of Columbia license number RN965339, as entered by the provider. Search the District of Columbia 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.