Kathryn Massengill, PA-C
NPI 1578890638 · Physician Assistant · Spartanburg, SC
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathryn Massengill, PA-C is a Physician Assistant provider in Spartanburg, SC (NPI 1578890638).
Provider details
- NPI number
- 1578890638
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 1444 (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 tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
86 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 59 | $105 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 27 | $75 |
Typical Medicare-allowed amounts for these services range $75–$105 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 43 | 18 |
| Fluconazole | 24 | 18 |
| Valacyclovir Hclbrand: Valacyclovir | 24 | — |
| Metronidazole | 22 | 17 |
| Fluoxetine Hcl | 20 | — |
| Alendronate Sodium | 14 | — |
| Paroxetine Hcl | 14 | — |
| Escitalopram Oxalate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$319 across 16 records (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
- 2009-11-11
- Last updated
- 2021-02-05
- Certified
- 2021-02-05
Frequently asked questions
- What is Kathryn Massengill's NPI number?
- Kathryn Massengill's National Provider Identifier (NPI) is 1578890638, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathryn Massengill's specialty?
- Kathryn Massengill is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kathryn Massengill located?
- Kathryn Massengill's practice location on file with NPPES is 853 N Church St Ste 600, Spartanburg, SC 29303-3070.
- What is Kathryn Massengill's phone number?
- The practice phone number listed in the NPPES registry for Kathryn Massengill is (645) 834-5568.
- Does Kathryn Massengill accept Medicare?
- Kathryn Massengill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathryn Massengill's NPI active?
- Yes — Kathryn Massengill's NPI (1578890638) is active in the NPPES registry as of the last update on 2021-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.