Lawrence R. Marsh, LCSW
Clinical Social Worker · Boulder, CO
Lawrence R. Marsh, LCSW is a clinical social worker with a practice address in Boulder, Colorado, and NPI 1043850332, issued on Jan 14, 2020. Check the license (Colorado 991081, as entered in NPPES) with the Colorado board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Lawrence R. Marsh
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 991081 CO
Self-reported in NPPES; status is on the state search - Practice location
- 7722 Brockway Dr, Boulder, CO 80303
- Phone
- (303) 641-6608
- Enumerated
- Jan 14, 2020
- Record last updated
- Jan 14, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20260220000828); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 7,356 in Colorado → Look up another NPI →
Also registered at 7722 Brockway Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Natalie Portman-Marsh, LCSWClinical Social Worker1073788071
Verify Lawrence R. Marsh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license 991081Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Lawrence R. Marsh among 7,356 clinical social worker records in Colorado
Lawrence R. Marsh, LCSW is one of 7,356 clinical social worker records with a practice address in Colorado. 14% 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 2020, is newer than 63% of them.
- NPI issued2020 · 63% of these records are older, 32% newer
- In a Medicare fileNo · 14% of these records are
- In the CMS Doctors and Clinicians fileYes · 21% of these records are
- Graduated1989 · median 2014 among the 1,575 with a school on file
- Record last updated2020 · 46% 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 Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
316 clinical social worker records list a practice address in Boulder
They are 316 of the 5,635 NPPES records with a practice address in Boulder, and 7,356 clinical social worker records in Colorado. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,356 in Colorado → Every provider in Boulder → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Wendy Bigelson, LCSW,ACSWBoulder, CO 803031548400864
- Maurya Brenneman, LCSW-CBoulder, CO 803031700916681
- Stephanie Bryan, LCSW, CAC IIIBoulder, CO 803031942441639
- Dawn Engel, LCSWBoulder, CO 803031639221716
- Joshua Goldman, MSWBoulder, CO 803031780715805
- Maxine GowerBoulder, CO 803031407025778
- Peter HineBoulder, CO 803031982782280
- Kristin Jones, LCSWBoulder, CO 803031184701799
Common questions
What is Lawrence R. Marsh, LCSW's NPI number?
Lawrence R. Marsh, LCSW's National Provider Identifier (NPI) is 1043850332, issued on Jan 14, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Lawrence R. Marsh, LCSW located?
The NPPES record lists a practice address at 7722 Brockway Dr, Boulder, CO, 80303. Phone: (303) 641-6608. Providers update this record themselves, so call before visiting.
How can I verify Lawrence R. Marsh, LCSW's license?
NPPES lists Colorado license number 991081, as entered by the provider. Search the Colorado 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.