Joanna Denis, M.D.
NPI 1528129475 · Internal Medicine Physician · Parsippany, NJ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joanna Denis, M.D. is a Internal Medicine Physician provider in Parsippany, NJ (NPI 1528129475).
Provider details
- NPI number
- 1528129475
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 25MA06251100 (NJ)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,581 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 | 1,652 | $134 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 1,034 | $65 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 845 | $9 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 421 | $15 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 231 | $95 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 78 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 220 | 67 |
| Omeprazole | 192 | 69 |
| Atorvastatin Calcium | 179 | 59 |
| Pravastatin Sodium | 139 | 36 |
| Metoprolol Succinate | 128 | 40 |
| Rsv Vacc, Pref a and Pref B/Pfbrand: Abrysvo | 121 | 121 |
| Amlodipine Besylate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$146 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
Registry dates
- Enumerated
- 2006-12-13
- Last updated
- 2007-07-08
Frequently asked questions
- What is Joanna Denis's NPI number?
- Joanna Denis's National Provider Identifier (NPI) is 1528129475, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanna Denis's specialty?
- Joanna Denis is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joanna Denis located?
- Joanna Denis's practice location on file with NPPES is 415 Parsippany Rd, Parsippany, NJ 07054-5192.
- What is Joanna Denis's phone number?
- The practice phone number listed in the NPPES registry for Joanna Denis is (973) 884-0666.
- Does Joanna Denis accept Medicare?
- Joanna Denis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joanna Denis's NPI active?
- Yes — Joanna Denis's NPI (1528129475) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.