Drs. Langevin, Larsen, Hamm & Cohen P.C.
NPI 1922153113 · Critical Care Medicine (Internal Medicine) Physician · Chevy Chase, MD
Drs. Langevin, Larsen, Hamm & Cohen P.C. is a Critical Care Medicine (Internal Medicine) Physician organization in Chevy Chase, MD (NPI 1922153113).
Provider details
- NPI number
- 1922153113
- Entity type
- Organization
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Ylene Larsen, President(301) 656-7374
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
Other names (DBA / former)
- Doing business as
- Chevy Chase Pulmonary Associates
Registry dates
- Enumerated
- 2007-01-25
- Last updated
- 2020-08-22
Frequently asked questions
- What is Drs. Langevin, Larsen, Hamm & Cohen P.C.'s NPI number?
- Drs. Langevin, Larsen, Hamm & Cohen P.C.'s National Provider Identifier (NPI) is 1922153113, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Drs. Langevin, Larsen, Hamm & Cohen P.C.?
- Drs. Langevin, Larsen, Hamm & Cohen P.C. is classified in the NPPES registry as Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Drs. Langevin, Larsen, Hamm & Cohen P.C. located?
- Drs. Langevin, Larsen, Hamm & Cohen P.C.'s practice location on file with NPPES is 5530 Wisconsin Ave, Chevy Chase, MD 20815-4404.
- What is Drs. Langevin, Larsen, Hamm & Cohen P.C.'s phone number?
- The practice phone number listed in the NPPES registry for Drs. Langevin, Larsen, Hamm & Cohen P.C. is (301) 656-7374.
- Who is the authorized official for Drs. Langevin, Larsen, Hamm & Cohen P.C.?
- The authorized official listed on Drs. Langevin, Larsen, Hamm & Cohen P.C.'s NPPES record is Ylene Larsen, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Drs. Langevin, Larsen, Hamm & Cohen P.C.'s NPI active?
- Yes — Drs. Langevin, Larsen, Hamm & Cohen P.C.'s NPI (1922153113) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.