Keith C. Chang, MD, PLLC
NPI 1851595383 · Ophthalmology Physician · New York, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Keith C. Chang, MD, PLLC is a Ophthalmology Physician organization in New York, NY (NPI 1851595383).
Provider details
- NPI number
- 1851595383
- Entity type
- Organization
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Keith Chang, Physician in Charge(212) 965-8883
- License
- 193442 (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
- 2007-06-11
- Last updated
- 2007-11-03
Frequently asked questions
- What is Keith C. Chang, MD, PLLC's NPI number?
- Keith C. Chang, MD, PLLC's National Provider Identifier (NPI) is 1851595383, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Keith C. Chang, MD, PLLC?
- Keith C. Chang, MD, PLLC is classified in the NPPES registry as Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Keith C. Chang, MD, PLLC located?
- Keith C. Chang, MD, PLLC's practice location on file with NPPES is 217 Grand St, New York, NY 10013-4286.
- What is Keith C. Chang, MD, PLLC's phone number?
- The practice phone number listed in the NPPES registry for Keith C. Chang, MD, PLLC is (212) 965-8883.
- Does Keith C. Chang, MD, PLLC accept Medicare?
- Keith C. Chang, MD, PLLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Keith C. Chang, MD, PLLC?
- The authorized official listed on Keith C. Chang, MD, PLLC's NPPES record is Keith Chang, Physician in Charge. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Keith C. Chang, MD, PLLC's NPI active?
- Yes — Keith C. Chang, MD, PLLC's NPI (1851595383) is active in the NPPES registry as of the last update on 2007-11-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.