What is Mark Withers's NPI number?

Mark Withers's National Provider Identifier (NPI) is 1336234228, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Withers's specialty?

Mark Withers is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).

Where is Mark Withers located?

Mark Withers's practice location on file with NPPES is 1867a Bullene Drive, Frederick, MD 21702-8232.

What is Mark Withers's phone number?

The practice phone number listed in the NPPES registry for Mark Withers is (301) 620-1711.

Is Mark Withers's NPI active?

Yes — Mark Withers's NPI (1336234228) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Mark Withers, M.D.

NPI 1336234228 · Internal Medicine Physician · Frederick, MD

Mark Withers, M.D. is a Internal Medicine Physician provider in Frederick, MD (NPI 1336234228).

Provider details

NPI number: 1336234228
Entity type: Individual
Primary specialty: Internal Medicine PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Male
Sole proprietor: No
License: 33347-020 (WI)

Specialties & taxonomies

Internal Medicine PhysicianPrimary207R00000XLicense 33347-020 (WI)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(90/100 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

1867a Bullene Drive

Frederick, MD 21702-8232

Phone: (301) 620-1711

Street-level locationGet directions

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Mailing address