Marc Herwitz, OD
NPI 1023088879 · Optometrist · Bethesda, MD
Enrolled with Medicare as Order and Referring Only - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Herwitz, OD is a Optometrist provider in Bethesda, MD (NPI 1023088879).
Provider details
- NPI number
- 1023088879
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
- License
- 046008230 (IL)
Specialties & taxonomies
Eye and Vision Services Providers
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
- 2006-01-25
- Last updated
- 2017-02-16
Frequently asked questions
- What is Marc Herwitz's NPI number?
- Marc Herwitz's National Provider Identifier (NPI) is 1023088879, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Herwitz's specialty?
- Marc Herwitz is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Marc Herwitz located?
- Marc Herwitz's practice location on file with NPPES is 8901 Rockville Pike, Bethesda, MD 20889-0001.
- What is Marc Herwitz's phone number?
- The practice phone number listed in the NPPES registry for Marc Herwitz is (301) 319-7001.
- Does Marc Herwitz accept Medicare?
- Marc Herwitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Herwitz's NPI active?
- Yes — Marc Herwitz's NPI (1023088879) is active in the NPPES registry as of the last update on 2017-02-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.