William Haffner, M.D.
NPI 1871594291 · Obstetrics & Gynecology Physician · Bethesda, MD
Enrolled with Medicare as Order and Referring Only - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Haffner, M.D. is a Obstetrics & Gynecology Physician provider in Bethesda, MD (NPI 1871594291).
Provider details
- NPI number
- 1871594291
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 25MA02230600 (NJ)
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
- 2005-08-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Haffner's NPI number?
- William Haffner's National Provider Identifier (NPI) is 1871594291, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Haffner's specialty?
- William Haffner is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is William Haffner located?
- William Haffner's practice location on file with NPPES is 8901 Rockville Pike, Bethesda, MD 20889-0001.
- What is William Haffner's phone number?
- The practice phone number listed in the NPPES registry for William Haffner is (301) 295-4390.
- Does William Haffner accept Medicare?
- William Haffner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Haffner's NPI active?
- Yes — William Haffner's NPI (1871594291) 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.