IndividualActive
Lawrence Layfer, M.D.
NPI 1235162835 · Rheumatology Physician · Chicago, IL
Lawrence Layfer, M.D. is a Rheumatology Physician provider in Chicago, IL (NPI 1235162835).
Provider details
- NPI number
- 1235162835
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036-052275 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
1725 W Harrison St
Suite 1017
Chicago, IL 60612-3841
Phone: (312) 942-6641
Street-level locationGet directions
Mailing address
1725 W Harrison St
Chicago, IL 60612-3841
Registry dates
- Enumerated
- 2006-07-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is Lawrence Layfer's NPI number?
- Lawrence Layfer's National Provider Identifier (NPI) is 1235162835, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lawrence Layfer's specialty?
- Lawrence Layfer is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Lawrence Layfer located?
- Lawrence Layfer's practice location on file with NPPES is 1725 W Harrison St, Chicago, IL 60612-3841.
- What is Lawrence Layfer's phone number?
- The practice phone number listed in the NPPES registry for Lawrence Layfer is (312) 942-6641.
- Is Lawrence Layfer's NPI active?
- Yes — Lawrence Layfer's NPI (1235162835) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.