Daniel L Mayer MD PC
NPI 1306858857 · Internal Medicine Physician · Smithtown, NY
Daniel L Mayer MD PC is a Internal Medicine Physician organization in Smithtown, NY (NPI 1306858857).
Provider details
- NPI number
- 1306858857
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Daniel Mayer, President(631) 366-5252
- License
- 1400451 (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
- 2006-08-13
- Last updated
- 2007-10-29
Frequently asked questions
- What is Daniel L Mayer MD PC's NPI number?
- Daniel L Mayer MD PC's National Provider Identifier (NPI) is 1306858857, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Daniel L Mayer MD PC?
- Daniel L Mayer MD PC is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel L Mayer MD PC located?
- Daniel L Mayer MD PC's practice location on file with NPPES is 263 East Main Street, Smithtown, NY 11787.
- What is Daniel L Mayer MD PC's phone number?
- The practice phone number listed in the NPPES registry for Daniel L Mayer MD PC is (631) 366-5252.
- Who is the authorized official for Daniel L Mayer MD PC?
- The authorized official listed on Daniel L Mayer MD PC's NPPES record is Daniel Mayer, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Daniel L Mayer MD PC's NPI active?
- Yes — Daniel L Mayer MD PC's NPI (1306858857) is active in the NPPES registry as of the last update on 2007-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.