Gillian Katz M.D., PLLC
NPI 1235363615 · Endocrinology, Diabetes & Metabolism Physician · New York, NY
Gillian Katz M.D., PLLC is a Endocrinology, Diabetes & Metabolism Physician organization in New York, NY (NPI 1235363615).
Provider details
- NPI number
- 1235363615
- Entity type
- Organization
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Gillian Katz, Owner(646) 421-6062
- License
- 183999-1 (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
17 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
Other names (DBA / former)
- Former legal business name
- Gillian Katz M.D., PLLC
Registry dates
- Enumerated
- 2009-05-13
- Last updated
- 2009-05-13
Frequently asked questions
- What is Gillian Katz M.D., PLLC's NPI number?
- Gillian Katz M.D., PLLC's National Provider Identifier (NPI) is 1235363615, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Gillian Katz M.D., PLLC?
- Gillian Katz M.D., PLLC is classified in the NPPES registry as Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Gillian Katz M.D., PLLC located?
- Gillian Katz M.D., PLLC's practice location on file with NPPES is 166 5th Ave, New York, NY 10010-5909.
- What is Gillian Katz M.D., PLLC's phone number?
- The practice phone number listed in the NPPES registry for Gillian Katz M.D., PLLC is (646) 421-6062.
- Who is the authorized official for Gillian Katz M.D., PLLC?
- The authorized official listed on Gillian Katz M.D., PLLC's NPPES record is Gillian Katz, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Gillian Katz M.D., PLLC's NPI active?
- Yes — Gillian Katz M.D., PLLC's NPI (1235363615) is active in the NPPES registry as of the last update on 2009-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.