Peter Johnsen, LMSW
Clinical Social Worker · Olney, MD
Peter Johnsen, LMSW is a clinical social worker with a practice address in Olney, Maryland, and NPI 1194314815, issued on Jan 17, 2021. Check the license (Maryland 25646, as entered in NPPES) with the Maryland board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Peter Johnsen
- Credential
- LMSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 25646 MD
Self-reported in NPPES; status is on the state search - Practice location
- 3510 Homeland Ter, Olney, MD 20832
- Phone
- (202) 713-6577
- Enumerated
- Jan 17, 2021
- Record last updated
- Jan 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 9,007 in Maryland → Look up another NPI →
Also registered at 3510 Homeland Ter
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Johnsen, MSW, LCSW-CSocial Worker1750910063
Verify Peter Johnsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 25646Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Peter Johnsen among 9,007 clinical social worker records in Maryland
Peter Johnsen, LMSW is one of 9,007 clinical social worker records with a practice address in Maryland. 11% 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 2021, is newer than 75% of them.
- NPI issued2021 · 75% of these records are older, 20% newer
- In a Medicare fileNo · 11% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
52 clinical social worker records list a practice address in Olney
They are 52 of the 742 NPPES records with a practice address in Olney, and 9,007 clinical social worker records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 9,007 in Maryland → Every provider in Olney → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Marilyn Austin, PH.D.,LCSW-C, BCDOlney, MD 208321356330872
- Gabriel Chernoff, LCSWCOlney, MD 208321134340474
- Amy Christianson, LCSW-COlney, MD 208321255452439
- Kimberly Garrison, LCSW-COlney, MD 208321053537563
- Karen Gordon, LCSWCOlney, MD 208321386760031
- Lori Post, L.C.S.W.-C.Olney, MD 208321962602391
- James Presant, LCSWC, LCSWOlney, MD 208321922267848
- Shannon Robinson, LCSW-COlney, MD 208321710108055
Common questions
What is Peter Johnsen, LMSW's NPI number?
Peter Johnsen, LMSW's National Provider Identifier (NPI) is 1194314815, issued on Jan 17, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Peter Johnsen, LMSW located?
The NPPES record lists a practice address at 3510 Homeland Ter, Olney, MD, 20832. Phone: (202) 713-6577. Providers update this record themselves, so call before visiting.
How can I verify Peter Johnsen, LMSW's license?
NPPES lists Maryland license number 25646, 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. 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.