Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark Green, MD
Psychiatry Physician in Belmont, MA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1407075294
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Registry record
Entity type Individual (Type 1)
Name Mark Green
Credential MD
Sex Male
Practice address 90 Concord Ave, Belmont, MA, 02478
Phone (857) 598-2808
Fax (857) 598-2864
Enumeration date Apr 24, 2007
Last updated in NPPES Jul 15, 2015
Taxonomy & licenses
2084A0401X Addiction Medicine (Psychiatry & Neurology) Physician Allopathic & Osteopathic Physicians · License 222713 (MA) Secondary
2084P0802X Addiction Psychiatry Physician Allopathic & Osteopathic Physicians · License 222713 (MA) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 41035810 | Medicaid | CO | - |
| 021927 | Other | CO | KAISER COMMERCIAL NUMBER |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for Mark Green?
The National Provider Identifier (NPI) for Mark Green is 1407075294, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Green practice?
The practice location on file with NPPES is in Belmont, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Deborah Van Etten Psychiatric/Mental Health Clinical Nurse Specialist · Belmont, MA NPI 1942240197 Audiology Services Inc Audiologist · Belmont, MA NPI 1780789792 Jean Rosowski Audiologist · Belmont, MA NPI 1578668588 Gayle Nye Audiologist · Belmont, MA NPI 1366531626 Diane Grimaldi Professional Counselor · Belmont, MA NPI 1841362589 Drew Welch Addiction (Substance Use Disorder) Counselor · Belmont, MA NPI 1164843488 Valerie Photos Psychologist · Belmont, MA NPI 1093128043 Rosenberg Audiology Inc. Audiology Assistant · Belmont, MA NPI 1265920433
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-15.