IndividualActive
Charles Welch, MD
NPI 1558335257 · Psychiatry Physician · Cambridge, MA
Charles Welch, MD is a Psychiatry Physician provider in Cambridge, MA (NPI 1558335257).
Provider details
- NPI number
- 1558335257
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 35853 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
56 Shepard St
Mass General Physician Organization
Cambridge, MA 02138-1523
Phone: (617) 347-7011
Fax: (617) 945-0991
Street-level locationGet directions
Mailing address
56 Shepard St
Cambridge, MA 02138-1523
Registry dates
- Enumerated
- 2006-02-17
- Last updated
- 2015-02-02
Frequently asked questions
- What is Charles Welch's NPI number?
- Charles Welch's National Provider Identifier (NPI) is 1558335257, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Welch's specialty?
- Charles Welch is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Welch located?
- Charles Welch's practice location on file with NPPES is 56 Shepard St, Cambridge, MA 02138-1523.
- What is Charles Welch's phone number?
- The practice phone number listed in the NPPES registry for Charles Welch is (617) 347-7011.
- Is Charles Welch's NPI active?
- Yes — Charles Welch's NPI (1558335257) is active in the NPPES registry as of the last update on 2015-02-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.