Mark S. Grassman, MSW
Clinical Social Worker · Boulder, CO
Mark S. Grassman, MSW is a clinical social worker with a practice address in Boulder, Colorado, and NPI 1922121003, issued on Apr 6, 2007. Check the license (Colorado 983032, 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
- Mark S. Grassman
- Credential
- MSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 983032 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1244 Pine St, Boulder, CO 80302
- Phone
- (303) 447-2727
- Enumerated
- Apr 6, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (303) 444-2843
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 7,356 in Colorado → Look up another NPI →
Also registered at 1244 Pine St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniel Courtney, PH.D.Clinical Social Worker1033144472
- Cynthia Divino, PH.D.Clinical Psychologist1700928900
- Rhiannon FinkProfessional Counselor1790452803
- Debbie Gould, MS, LCSWMental Health Counselor1962640185
- Katherine Kripke, LCSWClinical Social Worker1477804102
- Alberta LoganProfessional Counselor1366907719
Verify Mark S. Grassman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license 983032Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mark S. Grassman among 7,356 clinical social worker records in Colorado
Mark S. Grassman, MSW 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 2007, is newer than 8% of them.
- NPI issued2007 · 8% of these records are older, 83% newer
- In a Medicare fileNo · 14% of these records are
- In the CMS Doctors and Clinicians fileNo · 21% of these records are
- Record last updated2007 · 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
- Erica Brann, L.C.S.W.Boulder, CO 803021598898819
- Marilyn Conroy, LCSWBoulder, CO 803021982825659
- Daniel Courtney, PH.D.Boulder, CO 803021033144472
- Regina Gray, MSWBoulder, CO 803021295846491
- Deborah Knoll, LCSWBoulder, CO 803021366566655
- Amy Latimer, MSW, LCSWBoulder, CO 803021255539151
- Barbara Miller, L.C.S.W.Boulder, CO 803021295825057
- Lori Moses-Bennett, LCSWBoulder, CO 803021851439129
Common questions
What is Mark S. Grassman, MSW's NPI number?
Mark S. Grassman, MSW's National Provider Identifier (NPI) is 1922121003, issued on Apr 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark S. Grassman, MSW located?
The NPPES record lists a practice address at 1244 Pine St, Boulder, CO, 80302. Phone: (303) 447-2727. Providers update this record themselves, so call before visiting.
How can I verify Mark S. Grassman, MSW's license?
NPPES lists Colorado license number 983032, 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.