IndividualActive
Lawrence Hartmann, M.D.
NPI 1386775229 · Psychiatry Physician · Cambridge, MA
Lawrence Hartmann, M.D. is a Psychiatry Physician provider in Cambridge, MA (NPI 1386775229).
Provider details
- NPI number
- 1386775229
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 29343 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
147 Brattle St
Cambridge, MA 02138-2234
Phone: (617) 876-8488
Street-level locationGet directions
Mailing address
147 Brattle St
Cambridge, MA 02138-2234
Registry dates
- Enumerated
- 2007-03-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is Lawrence Hartmann's NPI number?
- Lawrence Hartmann's National Provider Identifier (NPI) is 1386775229, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lawrence Hartmann's specialty?
- Lawrence Hartmann is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Lawrence Hartmann located?
- Lawrence Hartmann's practice location on file with NPPES is 147 Brattle St, Cambridge, MA 02138-2234.
- What is Lawrence Hartmann's phone number?
- The practice phone number listed in the NPPES registry for Lawrence Hartmann is (617) 876-8488.
- Is Lawrence Hartmann's NPI active?
- Yes — Lawrence Hartmann's NPI (1386775229) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.