OrganizationActive
Mark L. Mallek, MD P.C.
NPI 1649330226 · Gastroenterology Physician · Nashua, NH
Mark L. Mallek, MD P.C. is a Gastroenterology Physician organization in Nashua, NH (NPI 1649330226).
Provider details
- NPI number
- 1649330226
- Entity type
- Organization
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Marie Ellis, Office Manager(603) 881-8000
- License
- 6560 (NH)
Specialties & taxonomies
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
280 Main St
Suite 340
Nashua, NH 03060-2919
Phone: (603) 881-8000
Fax: (603) 881-8001
Street-level locationGet directions
Mailing address
280 Main St
Nashua, NH 03060-2919
Registry dates
- Enumerated
- 2006-12-12
- Last updated
- 2020-08-22
Frequently asked questions
- What is Mark L. Mallek, MD P.C.'s NPI number?
- Mark L. Mallek, MD P.C.'s National Provider Identifier (NPI) is 1649330226, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark L. Mallek, MD P.C.?
- Mark L. Mallek, MD P.C. is classified in the NPPES registry as Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark L. Mallek, MD P.C. located?
- Mark L. Mallek, MD P.C.'s practice location on file with NPPES is 280 Main St, Nashua, NH 03060-2919.
- What is Mark L. Mallek, MD P.C.'s phone number?
- The practice phone number listed in the NPPES registry for Mark L. Mallek, MD P.C. is (603) 881-8000.
- Who is the authorized official for Mark L. Mallek, MD P.C.?
- The authorized official listed on Mark L. Mallek, MD P.C.'s NPPES record is Marie Ellis, Office Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark L. Mallek, MD P.C.'s NPI active?
- Yes — Mark L. Mallek, MD P.C.'s NPI (1649330226) 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.