Geriatric Services, P.C.
NPI 1255386561 · Internal Medicine Physician · Yonkers, NY
Geriatric Services, P.C. is a Internal Medicine Physician organization in Yonkers, NY (NPI 1255386561).
Provider details
- NPI number
- 1255386561
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Thomas Kalchthaler, Ceo and Medical Director(914) 376-5555
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Family Medicine Physician207Q00000X
Allopathic & Osteopathic Physicians
- Nurse Practitioner363L00000X
Physician Assistants & Advanced Practice Nursing Providers
- Physician Assistant363A00000X
Physician Assistants & Advanced Practice Nursing Providers
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
- 2006-05-24
- Last updated
- 2008-09-15
Frequently asked questions
- What is Geriatric Services, P.C.'s NPI number?
- Geriatric Services, P.C.'s National Provider Identifier (NPI) is 1255386561, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Geriatric Services, P.C.?
- Geriatric Services, P.C. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Geriatric Services, P.C. located?
- Geriatric Services, P.C.'s practice location on file with NPPES is 69 S Broadway, Yonkers, NY 10701-4004.
- What is Geriatric Services, P.C.'s phone number?
- The practice phone number listed in the NPPES registry for Geriatric Services, P.C. is (914) 376-5555.
- Who is the authorized official for Geriatric Services, P.C.?
- The authorized official listed on Geriatric Services, P.C.'s NPPES record is Thomas Kalchthaler, Ceo and Medical Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Geriatric Services, P.C.'s NPI active?
- Yes — Geriatric Services, P.C.'s NPI (1255386561) is active in the NPPES registry as of the last update on 2008-09-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.