Isaac Johnson, FNP
NPI 1639773567 · Family Nurse Practitioner · Columbia, SC
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Isaac Johnson, FNP is a Family Nurse Practitioner provider in Columbia, SC (NPI 1639773567).
Provider details
- NPI number
- 1639773567
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Male
- Sole proprietor
- No
- License
- 24303 (SC)
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 tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
33 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 19 | $97 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 14 | $57 |
Typical Medicare-allowed amounts for these services range $57–$97 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 129 N Washington StSumter, SC 29150-4949Phone: (803) 774-9111
Registry dates
- Enumerated
- 2020-11-22
- Last updated
- 2025-03-03
- Certified
- 2025-03-03
Frequently asked questions
- What is Isaac Johnson's NPI number?
- Isaac Johnson's National Provider Identifier (NPI) is 1639773567, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Isaac Johnson's specialty?
- Isaac Johnson is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Isaac Johnson located?
- Isaac Johnson's practice location on file with NPPES is 14 Richland Medical Park Dr Ste 350, Columbia, SC 29203-6896.
- What is Isaac Johnson's phone number?
- The practice phone number listed in the NPPES registry for Isaac Johnson is (803) 434-1663.
- Does Isaac Johnson accept Medicare?
- Isaac Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Isaac Johnson's NPI active?
- Yes — Isaac Johnson's NPI (1639773567) is active in the NPPES registry as of the last update on 2025-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.