Caroline Merritt-Schiermeyer, DO
NPI 1598971277 · Internal Medicine Physician · Midwest City, OK
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Caroline Merritt-Schiermeyer, DO is a Internal Medicine Physician provider in Midwest City, OK (NPI 1598971277).
Provider details
- NPI number
- 1598971277
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 4213 (OK)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,153 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) |
|---|---|---|
| Removal of Skin and Tissue, 20.0 Sq Cm Or Less11042 | 660 | $56 |
| Removal of Skin and Tissue, Each Additional 20.0 Sq Cm Or Less11045 | 343 | $24 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 60 | $92 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 34 | $61 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 23 | $126 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Hyclate | 24 | 20 |
| Gentamicin Sulfate | 21 | 16 |
| Ciprofloxacin Hcl | 18 | 17 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 16 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 15 | 11 |
| Levofloxacin | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$415 across 14 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
Additional practice locations (2)
- 1000 N Lee AveOklahoma City, OK 73102-1036Phone: (405) 272-4200Fax: (405) 272-4203
- 13401 N Western Ave Ste 200Oklahoma City, OK 73114-1410Phone: (405) 252-3450
Registry dates
- Enumerated
- 2007-05-16
- Last updated
- 2025-06-20
- Certified
- 2025-06-20
Frequently asked questions
- What is Caroline Merritt-Schiermeyer's NPI number?
- Caroline Merritt-Schiermeyer's National Provider Identifier (NPI) is 1598971277, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Caroline Merritt-Schiermeyer's specialty?
- Caroline Merritt-Schiermeyer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Caroline Merritt-Schiermeyer located?
- Caroline Merritt-Schiermeyer's practice location on file with NPPES is 2825 Parklawn Dr, Midwest City, OK 73110-4201.
- What is Caroline Merritt-Schiermeyer's phone number?
- The practice phone number listed in the NPPES registry for Caroline Merritt-Schiermeyer is (405) 610-8056.
- Does Caroline Merritt-Schiermeyer accept Medicare?
- Caroline Merritt-Schiermeyer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Caroline Merritt-Schiermeyer's NPI active?
- Yes — Caroline Merritt-Schiermeyer's NPI (1598971277) is active in the NPPES registry as of the last update on 2025-06-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.