Michael Grissom, CRNP
NPI 1649649138 · Adult Health Nurse Practitioner · Madison, AL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Grissom, CRNP is a Adult Health Nurse Practitioner provider in Madison, AL (NPI 1649649138).
Provider details
- NPI number
- 1649649138
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNP
- Sex
- Male
- Sole proprietor
- No
- License
- 1-131578 (AL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
10 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-09-15
- Last updated
- 2015-09-15
Frequently asked questions
- What is Michael Grissom's NPI number?
- Michael Grissom's National Provider Identifier (NPI) is 1649649138, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Grissom's specialty?
- Michael Grissom is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Michael Grissom located?
- Michael Grissom's practice location on file with NPPES is 8375 Highway 72 W, Madison, AL 35758-9573.
- What is Michael Grissom's phone number?
- The practice phone number listed in the NPPES registry for Michael Grissom is (256) 265-2012.
- Does Michael Grissom accept Medicare?
- Michael Grissom is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Grissom's NPI active?
- Yes — Michael Grissom's NPI (1649649138) is active in the NPPES registry as of the last update on 2015-09-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.