Karen Johnson, C.R.N.P.
NPI 1730321241 · Family Nurse Practitioner · Aberdeen, MD
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Johnson, C.R.N.P. is a Family Nurse Practitioner provider in Aberdeen, MD (NPI 1730321241).
Provider details
- NPI number
- 1730321241
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- C.R.N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- R125838 (MD)
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
17 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
1,868 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) |
|---|---|---|
| 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 | 294 | $14 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 257 | $92 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 249 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 249 | $79 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 162 | $114 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 121 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 290 | 89 |
| Rosuvastatin Calcium | 284 | 83 |
| Amlodipine Besylate | 260 | 80 |
| Levothyroxine Sodium | 251 | 68 |
| Omeprazole | 191 | 54 |
| Lisinopril | 171 | 46 |
| Losartan Potassium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,778 across 83 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
- 2009-03-30
- Last updated
- 2012-06-29
Frequently asked questions
- What is Karen Johnson's NPI number?
- Karen Johnson's National Provider Identifier (NPI) is 1730321241, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Johnson's specialty?
- Karen Johnson is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Johnson located?
- Karen Johnson's practice location on file with NPPES is 998 Hospitality Way, Suite 102, Aberdeen, MD 21001-1757.
- What is Karen Johnson's phone number?
- The practice phone number listed in the NPPES registry for Karen Johnson is (410) 297-9500.
- Does Karen Johnson accept Medicare?
- Karen Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Johnson's NPI active?
- Yes — Karen Johnson's NPI (1730321241) is active in the NPPES registry as of the last update on 2012-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.