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2026 NPPES data Family Nurse Practitioner NPI 1639773567 FNP
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Isaac Johnson, FNP

Family Nurse Practitioner in Columbia, South Carolina.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 210,832 in Family Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
195
Medicare Part D claims · 128 beneficiaries · Family Nurse Practitioner avg: 1K
MIPS score
99.3/100
▲ 16 pts above national avg 83.5 · Exceptional
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Isaac Johnson, FNP reported a CMS MIPS final score of 99.3/100 - above the 83.5 national average - and filed 195 Medicare Part D claims in 2023.

99.3/100
MIPS score · +16 vs avg
195
Part D claims, 2023
≥91st
pct among measured MIPS (lower-bound band)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.

Federal trust snapshot

What official records show about Isaac Johnson, FNP

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1639773567), first enumerated 11/22/2020.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 195 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 99.3/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Hospital affiliations

    1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.

    Source: CMS Care Compare

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

CMS NPPES provider registry desk

NPI 1639773567 · Family Nurse Practitioner

NPI-10 · ENUM-RECENT · TAX-MEGA · MIPS-ELITE · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH

  • NPI-10 1639773567
  • ENUM-RECENT 2020
  • TAX-MEGA 211K Family Nurse
  • MIPS-ELITE 99.3/100
  • RX-LIGHT 195
  • BOOK-LIGHT 3,844 in South Carolina
  • PHOTO-FINISH Ellain Joy Stoutenburg · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Isaac Johnson, FNP's MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

99 ≥ 91st percentile 91% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). Below this entry. 90+: 189,403 measured providers (42%). This entry sits in this band. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Isaac Johnson, FNP sits

This provider among family nurse practitioner peers

Across the 26,556 family nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Isaac Johnson, FNP writes more Part D claims than 34% of them and scores higher on MIPS quality than 91% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100023.947.871.795.5Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 77Isaac Johnson, FNP, Part D claim volume, percentile in specialty: 34 · MIPS quality, percentile: 91
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one family nurse practitioner peer from a representative sample of 60; the gold marker is Isaac Johnson, FNP. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Isaac Johnson, FNP?

High performer (top quartile)

NPI registry status

Active

Issued 11/22/2020

NPI 1639773567

Primary specialty

Family Nurse Practitioner

High-volume

210,832 US NPIs in this specialty

Medicare Part D claims

195 84% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

MIPS final score

99.3/100 15.8 pts vs avg

Exceptional band

vs 83.5 national avg

Specialty distribution in South Carolina

How Family Nurse Practitioner compares to other specialties among South Carolina providers

South Carolina providers
Pharmacist6.2%Mental Health Counselor5.1%Family Nurse Practitioner4.6%Physical Therapist4.5%Behavior Technician3.8%Speech-Language Pathologist3.7%
Largest specialties in South Carolina (% of in-state providers)

Medicare quality performance, MIPS

Isaac Johnson, FNP's 2023 MIPS final score plotted against the Family Nurse Practitioner national average

High performer (top quartile)
MIPS Final Score
99.3/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%99%
MIPS final score (Family Nurse Practitioner) - 99.3/100 vs national avg 83.5
How MIPS and board certification work

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

Practice Address

14 RICHLAND MEDICAL PARK DR STE 350
Columbia, SC 29203
(803) 434-1663

Provider Details

NPI 1639773567
Specialty Family Nurse Practitioner
Credentials FNP
Gender Male
NPI Issued 11/22/2020

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

99.3294
Final Score
Measured-score avg: 83.5
90.5979
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where Isaac Johnson, FNP bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

Prisma Health Medical Group-Midlands
Columbia, SC

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

195
Total Claims
$2K
Total Drug Cost
128
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
201
Total Day Supply
1,727
Generic Drug Cost
$2K
Opioid Claims
52 (26.7% rate)
Antibiotic Claims
49

Patient Demographics

Average Patient Age
66.4 years
Avg HCC Risk Score
1.88
Gender Split
55% female / 45% male
Age Distribution
<65: 48, 65-74: 48, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Isaac Johnson, FNP prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
33
Naproxen
 16
Cephalexin
 15
Prednisone
 14
Oxycodone Hcl
 13

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

More Family Nurse Practitioner in SC → All providers in South Carolina → Compare specialties →

Family Nurse Practitioner Overview

How Isaac Johnson, FNP fits within the Family Nurse Practitioner landscape nationally.

210,832
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider

Isaac Johnson, FNP's 195 claims are below the specialty average of 1,222.

Nationwide Family Nurse Practitioner peers with similar MIPS or enrollment year

Two federal-record peer sets for Johnson, both outside South Carolina so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (99.3 here).

Erica Ladson 99.3 NC Elijah Mays 99.3 NC Michael Sullivan 99.3 NC Ellain Joy Stoutenburg 99.3 TX

Same NPPES enumeration year (2020)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Danielle Knoble Wooster, OH Jose Del Risco Doral, FL Stephanie Peters Cleveland, OH Alyssa Hicks Mission, SD

Nearby Family Nurse Practitioner Providers in South Carolina

Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Johnson.

One of 3,844 Family Nurse Practitioner providers enrolled in South Carolina, 5 are shown here.

Dr. Cynthia Abachnou
APRN
Conway, SC
Dr. Vladislav Abaturov
NP
Greer, SC
Dr. Iman Abdul-Ali
NP
Moncks Corner, SC
Dr. Adila Abdul-Karim
FNP-C
Columbia, SC
Dr. Alycia Abdulla
FNP-BC
Camden, SC

Compare Family Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is Isaac Johnson, FNP's specialty? ▼
Isaac Johnson, FNP specializes in Family Nurse Practitioner and practices in Columbia, South Carolina. Credentials: FNP.
How much does Isaac Johnson, FNP prescribe under Medicare Part D? ▼
In 2023, Isaac Johnson, FNP wrote 195 Medicare Part D claims totaling $2K in drug costs for 128 beneficiaries.
What is Isaac Johnson, FNP's Medicare quality score? ▼
Isaac Johnson, FNP has a CMS MIPS Final Score of 99.3/100 (Quality: 90.6). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Isaac Johnson, FNP located? ▼
Isaac Johnson, FNP is located at 14 RICHLAND MEDICAL PARK DR STE 350, Columbia, SC, 29203. Phone: (803) 434-1663.
What is Isaac Johnson, FNP's NPI number? ▼
Isaac Johnson, FNP's National Provider Identifier (NPI) is 1639773567, issued on 11/22/2020.
Does Isaac Johnson, FNP prescribe opioids? ▼
Yes, Isaac Johnson, FNP had 52 opioid claims in 2023 with an opioid prescribing rate of 26.7%.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 210,832 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does Isaac Johnson, FNP prescribe most often? ▼
Based on 2023 Medicare Part D data, Isaac Johnson, FNP's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Naproxen, Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Isaac Johnson, FNP accept Medicare? ▼
Isaac Johnson, FNP appears in CMS Medicare data with 195 Part D claims and 128 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Isaac Johnson, FNP's credentials? ▼
Isaac Johnson, FNP's NPI is 1639773567 with credentials FNP. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

View source datasets and methodology notes
Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.