Don Dayson, M.D.
NPI 1013028638 · Internal Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Don Dayson, M.D. is a Internal Medicine Physician provider in New York, NY (NPI 1013028638).
Provider details
- NPI number
- 1013028638
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 142699 (NY)
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
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
Mailing address
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2008-10-03
Frequently asked questions
- What is Don Dayson's NPI number?
- Don Dayson's National Provider Identifier (NPI) is 1013028638, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Don Dayson's specialty?
- Don Dayson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Don Dayson located?
- Don Dayson's practice location on file with NPPES is 222 W 116th St, New York, NY 10026-2416.
- What is Don Dayson's phone number?
- The practice phone number listed in the NPPES registry for Don Dayson is (212) 862-6000.
- Does Don Dayson accept Medicare?
- Don Dayson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Don Dayson's NPI active?
- Yes — Don Dayson's NPI (1013028638) is active in the NPPES registry as of the last update on 2008-10-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.