Dan Tilles, M.D.
NPI 1912964321 · Internal Medicine Physician · Concord, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dan Tilles, M.D. is a Internal Medicine Physician provider in Concord, MA (NPI 1912964321).
Provider details
- NPI number
- 1912964321
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 45946 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-04-28
- Last updated
- 2011-05-26
Frequently asked questions
- What is Dan Tilles's NPI number?
- Dan Tilles's National Provider Identifier (NPI) is 1912964321, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dan Tilles's specialty?
- Dan Tilles is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Dan Tilles located?
- Dan Tilles's practice location on file with NPPES is 86 Baker Ave Extension, Concord, MA 01742-2125.
- What is Dan Tilles's phone number?
- The practice phone number listed in the NPPES registry for Dan Tilles is (978) 287-9300.
- Does Dan Tilles accept Medicare?
- Dan Tilles is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dan Tilles's NPI active?
- Yes — Dan Tilles's NPI (1912964321) is active in the NPPES registry as of the last update on 2011-05-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.