Marcus E. John, LCSW-C
School Social Worker · Gaithersburg, MD
Marcus E. John, LCSW-C is a school social worker with a practice address in Gaithersburg, Maryland, and NPI 1770306557, issued on Nov 1, 2024. Check the license (Maryland 26518, 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
- Marcus E. John
- Credential
- LCSW-C
- Primary taxonomy
- School Social Worker 1041S0200X
- License number
- 26518 MD
Self-reported in NPPES; status is on the state search - Practice location
- 640 E Diamond Ave, Gaithersburg, MD 20877
- Phone
- (202) 313-2397
- Enumerated
- Nov 1, 2024
- Record last updated
- Jan 9, 2026
- Medicare enrollment
- Enrolled (PECOS I20260114004231); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest school social worker records → All 225 in Maryland → Look up another NPI →
Also registered at 640 E Diamond Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lauren Faherty, LMSWSchool Social Worker1275379117
- Stephanie Mobley, LCSW-CClinical Social Worker1952126567
- Sara Nakamura-PeekMental Health Counselor1962224816
- Karina Urriola, LMSWSocial Worker1437840212
Verify Marcus E. John in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 26518Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Marcus E. John among 225 school social worker records in Maryland
Marcus E. John, LCSW-C is one of 225 school social worker records with a practice address in Maryland. 3% 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 2024, is newer than 76% of them.
- NPI issued2024 · 76% of these records are older, 12% newer
- In a Medicare fileNo · 3% of these records are
- In the CMS Doctors and Clinicians fileYes · 5% of these records are
- Graduated2020 · median 2013 among the 11 with a school on file
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041S0200X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
School Social Worker providers in Maryland
There are 225 school social worker records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 225 in Maryland → Every provider in Gaithersburg → School Social Worker nationwide →
The 8 school social worker records with the nearest ZIP codes
- Emily DevereuxGaithersburg, MD 208771588478168
- Lauren Faherty, LMSWGaithersburg, MD 208771275379117
- Walter HowellGaithersburg, MD 208771609298561
- John Loftus, LCSW-CGaithersburg, MD 208771396105193
- Alyssa WarcoGaithersburg, MD 208771558786103
- Elizabeth SanabriaGermantown, MD 208761609643691
- Marley Jerome-Featherson, LCSW-CGaithersburg, MD 208791174064232
- Rebecca Heagy, LCSW-CRockville, MD 208551154260743
Common questions
What is Marcus E. John, LCSW-C's NPI number?
Marcus E. John, LCSW-C's National Provider Identifier (NPI) is 1770306557, issued on Nov 1, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Marcus E. John, LCSW-C located?
The NPPES record lists a practice address at 640 E Diamond Ave, Gaithersburg, MD, 20877. Phone: (202) 313-2397. Providers update this record themselves, so call before visiting.
How can I verify Marcus E. John, LCSW-C's license?
NPPES lists Maryland license number 26518, 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.