Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Alan Marc Jacobson, M.D.
Psychiatry Physician in Boston, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1396826608
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Registry record
Entity type Individual (Type 1)
Name Dr. Alan Marc Jacobson
Credential M.D.
Sex Male
Practice address 1 Joslin Pl, Boston, MA, 02215
Phone (617) 732-2594
Fax (617) 226-5805
Enumeration date Oct 17, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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 |
|---|---|---|---|
| 32953 | Other | MA | STATE LICENSE |
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 specialty is Alan Jacobson?
Alan Jacobson is registered in NPPES with the primary taxonomy of Psychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Steven Shoelson Endocrinology, Diabetes & Metabolism Physician · Boston, MA NPI 1851380307 Ramona Dvorak Psychiatry Physician · Boston, MA NPI 1386635589 George King Endocrinology, Diabetes & Metabolism Physician · Boston, MA NPI 1669458816 Jason Gaglia Endocrinology, Diabetes & Metabolism Physician · Boston, MA NPI 1023098605 Adelaide Puelzl-Quinn Registered Dietitian · Boston, MA NPI 1245203157 Eyiuche Okeke Endocrinology, Diabetes & Metabolism Physician · Boston, MA NPI 1275502890 Timothy Murtha Ophthalmology Physician · Boston, MA NPI 1891753760 Robert Gabbay Endocrinology, Diabetes & Metabolism Physician · Boston, MA NPI 1720036627
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.