Lydia Greffet, PA-C
NPI 1942722574 · Physician Assistant · Saint Louis, MO
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lydia Greffet, PA-C is a Physician Assistant provider in Saint Louis, MO (NPI 1942722574).
Provider details
- NPI number
- 1942722574
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
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
8 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
137 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 | 87 | $103 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 19 | $103 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 17 | $73 |
| Administration of Influenza Virus VaccineG0008 | 14 | $31 |
Typical Medicare-allowed amounts for these services range $31–$103 (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 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 63 | 26 |
| Lisinopril | 35 | 12 |
| Amlodipine Besylate | 34 | 13 |
| Levothyroxine Sodium | 26 | — |
| Losartan Potassium | 21 | — |
| Gabapentin | 20 | — |
| Meloxicam | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$445 across 29 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
- 2017-07-14
- Last updated
- 2023-09-06
- Certified
- 2023-09-06
Frequently asked questions
- What is Lydia Greffet's NPI number?
- Lydia Greffet's National Provider Identifier (NPI) is 1942722574, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lydia Greffet's specialty?
- Lydia Greffet is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Lydia Greffet located?
- Lydia Greffet's practice location on file with NPPES is 4460 S Lindbergh Blvd, Saint Louis, MO 63127-1647.
- What is Lydia Greffet's phone number?
- The practice phone number listed in the NPPES registry for Lydia Greffet is (314) 843-7557.
- Does Lydia Greffet accept Medicare?
- Lydia Greffet is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lydia Greffet's NPI active?
- Yes — Lydia Greffet's NPI (1942722574) is active in the NPPES registry as of the last update on 2023-09-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.