Karen Prahler, CRNP
NPI 1578166492 · Family Nurse Practitioner · Prince Frederick, MD
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Prahler, CRNP is a Family Nurse Practitioner provider in Prince Frederick, MD (NPI 1578166492).
Provider details
- NPI number
- 1578166492
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- R234785 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service 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
461 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 192 | $81 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 114 | $114 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 60 | $51 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 49 | $100 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 46 | $147 |
Typical Medicare-allowed amounts for these services range $51–$147 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 |
|---|---|---|
| Famotidine | 131 | 56 |
| Pantoprazole Sodium | 99 | 41 |
| Omeprazole | 74 | 39 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 63 | 63 |
| Linaclotidebrand: Linzess | 38 | 19 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 22 | 19 |
| Mesalaminebrand: Mesalamine Er |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$806 across 19 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
- 2020-11-21
- Last updated
- 2022-12-15
- Certified
- 2022-12-15
Frequently asked questions
- What is Karen Prahler's NPI number?
- Karen Prahler's National Provider Identifier (NPI) is 1578166492, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Prahler's specialty?
- Karen Prahler is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Prahler located?
- Karen Prahler's practice location on file with NPPES is 130 Hospital Rd Ste 102, Prince Frederick, MD 20678-4029.
- What is Karen Prahler's phone number?
- The practice phone number listed in the NPPES registry for Karen Prahler is (570) 556-8588.
- Does Karen Prahler accept Medicare?
- Karen Prahler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Prahler's NPI active?
- Yes — Karen Prahler's NPI (1578166492) is active in the NPPES registry as of the last update on 2022-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.