KATHERINE JOHNSON MD
NPI 1851739676
Internal Medicine - Diabetology in Greenwood, SC

Q: What is Katherine Johnson's NPI number?

The NPI number for Katherine Johnson is 1851739676. It was assigned to this individual provider in the NPPES registry on June 14, 2013.

Q: What is Katherine Johnson's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Diabetology, with taxonomy code 207QD0401X.

Q: When was this NPI record last updated?

The NPPES record for Katherine Johnson was last updated on July 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 14, 2013PECOS EnrolledAccepts Medicare Assignment

96.08/100

CMS Quality Rating

1132 SPRING ST, GREENWOOD, SC 29646(864) 725-1680 Get Directions Write a Review

NPPES record last updated: July 10, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 10, 2026, Sep 4, 2024, Sep 11, 2018 (3 updates tracked since 2018).

On this page

About Katherine Johnson Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KATHERINE JOHNSON MD (NPI 1851739676) is an individual diabetology provider in Greenwood, South Carolina, licensed in South Carolina (35716) and active in the NPI registry since June 2013. She is enrolled in Medicare PECOS, is affiliated with Anmed Health, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1851739676

Entity TypeIndividualFemale

Primary Taxonomy207QD0401X

Provider Legal NameKATHERINE JOHNSONCredential: MD

Location Address1132 SPRING STGreenwood, SC 29646-3859

Mailing Address104 Wells AveGreenwood, SC 29646-3837 · (864) 725-4673

Phone(864) 725-1680

Sole ProprietorNo

Medical School CMSUniversity Of Kentucky College Of MedicineGraduated 2013

Enumeration DateJune 14, 2013

Last NPPES UpdateJuly 10, 20263 updates tracked since enumeration

NPPES CertifiedJuly 10, 2026

✔ NPI 1851739676 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · DiabetologyAllopathic & Osteopathic Physicians

Taxonomy Code207QD0401X

License✔ Licensed in SC · 35716

Definition

An internist who specializes in diagnosis and management of type 1, type 2, gestational, and atypical diabetes; diabetes complications; hospital management of diabetic patients; use of technology in the treatment and monitoring of diabetes; management of ancillary diagnoses, such as hypertension, obesity, lipidemia, etc.; and education and counseling on nutrition and lifestyle management.

Also ListedFamily MedicineTaxonomy 207Q00000X · License 35716 (SC)

1132 SPRING ST, Greenwood, SC 29646

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Secondary Practice Locations 2

Location 1901 W Greenwood St Ste 1Abbeville, SC 29620-5727 · Phone (864) 366-9681

Location 26 College StDue West, SC 29639-9554 · Phone (864) 379-2345

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter Health, Ambetter of North Carolina and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Katherine Johnson Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2961628318

PECOS Enrollment IDI20140722000206

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Katherine Johnson reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Self Medical Group

Same address

Internal Medicine

1132 SPRING ST
Greenwood, SC 29646

Reassigned Medicare billing, South Carolina enrollment
560 clinicians in this Medicare group

NPI 1457943185 (864) 725-1680

Self Regional Healthcare

Same address

Family Medicine

1132 SPRING ST
Greenwood, SC 29646

Reassigned Medicare billing, South Carolina enrollment
231 clinicians in this Medicare group

NPI 1386443752 (864) 725-1680

Abbeville County Memorial Hospital

13 mi

Critical Access

420 THOMSON CIR
Abbeville, SC 29620

Reassigned Medicare billing, South Carolina enrollment
103 clinicians in this Medicare group

NPI 1063449361 (864) 366-5011

Self Regional Healthcare Partners

30 mi

Family Medicine

155 RIDGE MEDICAL PLAZA RD
Edgefield, SC 29824

Reassigned Medicare billing, South Carolina enrollment
126 clinicians in this Medicare group

NPI 1053929208 (803) 637-3146

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 12

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

215 services86 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

129 services103 patients

Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report 95251

This procedure involves placing a small sensor under your skin to continuously monitor your blood sugar levels in tissue fluid. The data is interpreted and a report is generated to help manage your diabetes more effectively.

114 services49 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

99 services55 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

93 services49 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

72 services71 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

61 services26 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

61 services61 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

37 services14 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

16 services16 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

16 services13 patients

Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with provider supplied equipment 95250

This process involves a tiny sensor placed under your skin that checks your blood sugar levels in tissue fluid regularly. The sensor sends these readings to a device, allowing you to track your levels in real-time. This is provided by your healthcare provider.

14 services11 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Anmed Health

Acute Care Hospitals · Anderson, SC

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number420027

Location800 N Fant StAnderson, SC 29621 · Anderson County

Emergency services Birthing friendly

Self Regional Healthcare

Acute Care Hospitals · Greenwood, SC

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number420071

Location1325 Spring StreetGreenwood, SC 29646 · Greenwood County

Emergency services Birthing friendly

Abbeville Area Medical Center

Critical Access Hospitals · Abbeville, SC

OwnershipVoluntary non-profit - Other

CMS Certification Number421301

Location420 Thomson CircleAbbeville, SC 29620 · Abbeville County

Emergency services

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

96.08/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

92.17

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553

DME-Other DME · category DE017N

7 suppliers60 claims60 services$178.78 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CARLIE I MAPP LRD

Dietitian, Registered

1132 SPRING ST
GREENWOOD, SC 29646

Greenwood County (864) 725-1680

SELF REGIONAL HEALTHCARE

Family Medicine

1132 SPRING ST
GREENWOOD, SC 29646

Greenwood County (864) 725-1680

SELF MEDICAL GROUP

Internal Medicine

1132 SPRING ST
GREENWOOD, SC 29646

Greenwood County (864) 725-1680

AMY R JACKSON

Family Medicine

1132 SPRING ST
GREENWOOD, SC 29646

Greenwood County (864) 725-1680

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Katherine Johnson's NPI number?

The NPI number for Katherine Johnson is 1851739676. It was assigned to this individual provider in the NPPES registry on June 14, 2013.

Where is Katherine Johnson located?

Katherine Johnson practices at 1132 Spring St, Greenwood, SC 29646. The listed phone number is (864) 725-1680.

What is Katherine Johnson's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Diabetology, with taxonomy code 207QD0401X.

Is Katherine Johnson enrolled in Medicare?

Yes. Katherine Johnson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Katherine Johnson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Johnson reassigns Medicare benefits to 4 organizations: Self Medical Group (Greenwood, SC), Self Regional Healthcare (Greenwood, SC), Abbeville County Memorial Hospital (Abbeville, SC) and Self Regional Healthcare Partners (Edgefield, SC). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Katherine Johnson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Katherine Johnson accept?

Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, First Choice Next and Molina Healthcare list Katherine Johnson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Katherine Johnson affiliated with any hospitals?

According to CMS data, Katherine Johnson is affiliated with Anmed Health, Self Regional Healthcare and Abbeville Area Medical Center.

When was this NPI record last updated?

The NPPES record for Katherine Johnson was last updated on July 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.