What is Richard Leff's NPI number?

Richard Leff's National Provider Identifier (NPI) is 1639374820, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Richard Leff's specialty?

Richard Leff is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).

Where is Richard Leff located?

Richard Leff's practice location on file with NPPES is 230 Fairville Rd, Chadds Ford, PA 19317-9469.

What is Richard Leff's phone number?

The practice phone number listed in the NPPES registry for Richard Leff is (610) 388-7623.

Is Richard Leff's NPI active?

Yes — Richard Leff's NPI (1639374820) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Richard Leff, M.D.

NPI 1639374820 · Rheumatology Physician · Chadds Ford, PA

Richard Leff, M.D. is a Rheumatology Physician provider in Chadds Ford, PA (NPI 1639374820).

Provider details

NPI number: 1639374820
Entity type: Individual
Primary specialty: Rheumatology PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: Yes
License: MD072738L (PA)

Specialties & taxonomies

Rheumatology PhysicianPrimary207RR0500XLicense MD072738L (PA)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(89/100 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

230 Fairville Rd

Chadds Ford, PA 19317-9469

Phone: (610) 388-7623

Street-level locationGet directions

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Mailing address