Christina Johannessen, FNP
NPI 1932862919 · Family Nurse Practitioner · Rockville, MD
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christina Johannessen, FNP is a Family Nurse Practitioner provider in Rockville, MD (NPI 1932862919).
Provider details
- NPI number
- 1932862919
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- APRN-3372 (HI)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
4 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,534 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 | 463 | $80 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 381 | $104 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 197 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 139 | $8 |
| Manual Urinalysis Test With Examination Using Microscope, Automated81001 | 128 | $3 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 |
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 |
|---|---|---|
| Methylprednisolone | 56 | 56 |
| Doxycycline Hyclate | 49 | 47 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 44 | 43 |
| Atorvastatin Calcium | 30 | 13 |
| Azithromycin | 29 | 28 |
| Levothyroxine Sodium | 27 | 11 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 22 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$180 across 9 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 (1)
- 377 Keahole StHonolulu, HI 96825-3405Phone: (808) 395-4427
Registry dates
- Enumerated
- 2021-10-18
- Last updated
- 2023-05-05
- Certified
- 2023-05-05
Frequently asked questions
- What is Christina Johannessen's NPI number?
- Christina Johannessen's National Provider Identifier (NPI) is 1932862919, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christina Johannessen's specialty?
- Christina Johannessen is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Christina Johannessen located?
- Christina Johannessen's practice location on file with NPPES is 1201 Seven Locks Rd Ste 111, Rockville, MD 20854-2957.
- What is Christina Johannessen's phone number?
- The practice phone number listed in the NPPES registry for Christina Johannessen is (301) 762-5020.
- Does Christina Johannessen accept Medicare?
- Christina Johannessen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christina Johannessen's NPI active?
- Yes — Christina Johannessen's NPI (1932862919) is active in the NPPES registry as of the last update on 2023-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.