John Grandner, CRNP
NPI 1699843094 · Nurse Practitioner · Rockville, MD
John Grandner, CRNP is a Nurse Practitioner provider in Rockville, MD (NPI 1699843094).
Provider details
- NPI number
- 1699843094
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNP
- Sex
- Male
- Sole proprietor
- No
- License
- RN47957 (DC)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-12-01
- Last updated
- 2012-01-05
Frequently asked questions
- What is John Grandner's NPI number?
- John Grandner's National Provider Identifier (NPI) is 1699843094, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Grandner's specialty?
- John Grandner is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Grandner located?
- John Grandner's practice location on file with NPPES is 2101 E Jefferson St, Rockville, MD 20852-4908.
- What is John Grandner's phone number?
- The practice phone number listed in the NPPES registry for John Grandner is (202) 898-5104.
- Is John Grandner's NPI active?
- Yes — John Grandner's NPI (1699843094) is active in the NPPES registry as of the last update on 2012-01-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.