Priscilla Callahan-Lyon, M.D.
NPI 1164432423 · Internal Medicine Physician · Gaithersburg, MD
Priscilla Callahan-Lyon, M.D. is a Internal Medicine Physician provider in Gaithersburg, MD (NPI 1164432423).
Provider details
- NPI number
- 1164432423
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- D0041794 (MD)
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
- 2006-08-09
- Last updated
- 2012-10-29
Frequently asked questions
- What is Priscilla Callahan-Lyon's NPI number?
- Priscilla Callahan-Lyon's National Provider Identifier (NPI) is 1164432423, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Priscilla Callahan-Lyon's specialty?
- Priscilla Callahan-Lyon is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Priscilla Callahan-Lyon located?
- Priscilla Callahan-Lyon's practice location on file with NPPES is 7 Metropolitan Ct, Gaithersburg, MD 20878-4016.
- What is Priscilla Callahan-Lyon's phone number?
- The practice phone number listed in the NPPES registry for Priscilla Callahan-Lyon is (240) 773-0307.
- Is Priscilla Callahan-Lyon's NPI active?
- Yes — Priscilla Callahan-Lyon's NPI (1164432423) is active in the NPPES registry as of the last update on 2012-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.