Madison Grinnell, MD
NPI 1649939109 · Dermatology Physician · Omaha, NE
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Madison Grinnell, MD is a Dermatology Physician provider in Omaha, NE (NPI 1649939109).
Provider details
- NPI number
- 1649939109
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- 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
4 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2021-12-13
- Last updated
- 2023-06-23
- Certified
- 2023-06-23
Frequently asked questions
- What is Madison Grinnell's NPI number?
- Madison Grinnell's National Provider Identifier (NPI) is 1649939109, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Madison Grinnell's specialty?
- Madison Grinnell is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Madison Grinnell located?
- Madison Grinnell's practice location on file with NPPES is Lauritzen Outpatient Center, Omaha, NE 68105.
- What is Madison Grinnell's phone number?
- The practice phone number listed in the NPPES registry for Madison Grinnell is (800) 922-0000.
- Does Madison Grinnell accept Medicare?
- Madison Grinnell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Madison Grinnell's NPI active?
- Yes — Madison Grinnell's NPI (1649939109) is active in the NPPES registry as of the last update on 2023-06-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.