Nathan Maassel, MD
NPI 1265960348 · Surgery Physician · Atlanta, GA
Enrolled with Medicare as Order and Referring Only - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Maassel, MD is a Surgery Physician provider in Atlanta, GA (NPI 1265960348).
Provider details
- NPI number
- 1265960348
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 20 York StreetYnhh Dept of SurgeryNew Haven, CT 06510-3220Phone: (203) 688-4242
Registry dates
- Enumerated
- 2017-06-01
- Last updated
- 2024-06-06
- Certified
- 2024-06-06
Frequently asked questions
- What is Nathan Maassel's NPI number?
- Nathan Maassel's National Provider Identifier (NPI) is 1265960348, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Maassel's specialty?
- Nathan Maassel is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Nathan Maassel located?
- Nathan Maassel's practice location on file with NPPES is 1405 Clifton Rd Ne, Atlanta, GA 30322-3220.
- What is Nathan Maassel's phone number?
- The practice phone number listed in the NPPES registry for Nathan Maassel is (404) 785-6725.
- Does Nathan Maassel accept Medicare?
- Nathan Maassel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Maassel's NPI active?
- Yes — Nathan Maassel's NPI (1265960348) is active in the NPPES registry as of the last update on 2024-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.