Cassie Lemaster, APRN FNP-C
NPI 1528634573 · Family Nurse Practitioner · Tulsa, OK
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cassie Lemaster, APRN FNP-C is a Family Nurse Practitioner provider in Tulsa, OK (NPI 1528634573).
Provider details
- NPI number
- 1528634573
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- 200623 (OK)
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
5 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
1,374 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 | 498 | $100 |
| Testing for Presence of Drug, By Chemistry Analyzers80307 | 451 | $60 |
| Drug Test(s), Definitive, Utilizing (1) Drug Identification Methods Able to Identify Individual Drugs and Distinguish Between Structural Isomers (but Not Necessarily Stereoisomers), Including, But Not Limited to Gc/Ms (any Type, Single Or Tandem) and Lc/MsG0480 | 398 | $112 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 27 | $13 |
Typical Medicare-allowed amounts for these services range $13–$112 (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 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 230 | 63 |
| Tizanidine Hcl | 160 | 53 |
| Pregabalin | 138 | 45 |
| Buprenorphine Hcl/Naloxone Hclbrand: Buprenorphine-Naloxone | 132 | 50 |
| Ibuprofen | 130 | 58 |
| Meloxicam | 118 | 43 |
| Cyclobenzaprine Hcl | 112 | 39 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$421 across 22 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
- 2021-06-01
- Last updated
- 2021-11-03
- Certified
- 2021-11-03
Frequently asked questions
- What is Cassie Lemaster's NPI number?
- Cassie Lemaster's National Provider Identifier (NPI) is 1528634573, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cassie Lemaster's specialty?
- Cassie Lemaster is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Cassie Lemaster located?
- Cassie Lemaster's practice location on file with NPPES is 4110 S 100th East Ave Ste 201, Tulsa, OK 74146-3629.
- What is Cassie Lemaster's phone number?
- The practice phone number listed in the NPPES registry for Cassie Lemaster is (724) 691-8857.
- Does Cassie Lemaster accept Medicare?
- Cassie Lemaster is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cassie Lemaster's NPI active?
- Yes — Cassie Lemaster's NPI (1528634573) is active in the NPPES registry as of the last update on 2021-11-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.