OrganizationActive
O.T. Tan, M.D., P.C.
NPI 1114198306 · Specialist · Boston, MA
O.T. Tan, M.D., P.C. is a Specialist organization in Boston, MA (NPI 1114198306).
Provider details
- NPI number
- 1114198306
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- Oon Tan, Owner(617) 424-8335
- License
- 51655 (MA)
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(87/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
29 Commonwealth Ave
Suite #101
Boston, MA 02116-2349
Phone: (617) 424-8335
Street-level locationGet directions
Mailing address
29 Commonwealth Ave
Boston, MA 02116-2349
Registry dates
- Enumerated
- 2008-03-17
- Last updated
- 2008-03-17
Frequently asked questions
- What is O.T. Tan, M.D., P.C.'s NPI number?
- O.T. Tan, M.D., P.C.'s National Provider Identifier (NPI) is 1114198306, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is O.T. Tan, M.D., P.C.?
- O.T. Tan, M.D., P.C. is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is O.T. Tan, M.D., P.C. located?
- O.T. Tan, M.D., P.C.'s practice location on file with NPPES is 29 Commonwealth Ave, Boston, MA 02116-2349.
- What is O.T. Tan, M.D., P.C.'s phone number?
- The practice phone number listed in the NPPES registry for O.T. Tan, M.D., P.C. is (617) 424-8335.
- Who is the authorized official for O.T. Tan, M.D., P.C.?
- The authorized official listed on O.T. Tan, M.D., P.C.'s NPPES record is Oon Tan, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is O.T. Tan, M.D., P.C.'s NPI active?
- Yes — O.T. Tan, M.D., P.C.'s NPI (1114198306) is active in the NPPES registry as of the last update on 2008-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.