Patricia Merwick, M.D.
NPI 1336117084 · Geriatric Medicine (Internal Medicine) Physician · Elmhurst, IL
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patricia Merwick, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in Elmhurst, IL (NPI 1336117084).
Provider details
- NPI number
- 1336117084
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036045874 (IL)
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
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
- 2006-03-09
- Last updated
- 2019-12-26
- Certified
- 2019-12-26
Frequently asked questions
- What is Patricia Merwick's NPI number?
- Patricia Merwick's National Provider Identifier (NPI) is 1336117084, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patricia Merwick's specialty?
- Patricia Merwick is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Patricia Merwick located?
- Patricia Merwick's practice location on file with NPPES is 533 W North Ave, Elmhurst, IL 60126-2135.
- What is Patricia Merwick's phone number?
- The practice phone number listed in the NPPES registry for Patricia Merwick is (630) 279-8771.
- Does Patricia Merwick accept Medicare?
- Patricia Merwick is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patricia Merwick's NPI active?
- Yes — Patricia Merwick's NPI (1336117084) is active in the NPPES registry as of the last update on 2019-12-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.