Karen Zagar, M.D.
NPI 1902889587 · Rheumatology Physician · Palm Harbor, FL
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Zagar, M.D. is a Rheumatology Physician provider in Palm Harbor, FL (NPI 1902889587).
Provider details
- NPI number
- 1902889587
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- ME92979 (FL)
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
20 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
3,638 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 | 667 | $127 |
| Therapy Procedure Using Exercise to Develop Strength, Endurance, Range of Motion, and Flexibility, Each 15 Minutes97110 | 625 | $24 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 621 | $69 |
| 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 | 609 | $16 |
| Therapy Procedure Using Manual Technique, Each 15 Minutes97140 | 266 | $21 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 326 | 80 |
| Hydroxychloroquine Sulfate | 203 | 55 |
| Prednisone | 179 | 49 |
| Tramadol Hcl | 168 | 27 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 86 | 17 |
| Denosumabbrand: Prolia | 71 | 49 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,475 across 172 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
- 2005-11-28
- Last updated
- 2016-12-06
Frequently asked questions
- What is Karen Zagar's NPI number?
- Karen Zagar's National Provider Identifier (NPI) is 1902889587, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Zagar's specialty?
- Karen Zagar is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Zagar located?
- Karen Zagar's practice location on file with NPPES is 32615 US Highway 19 N, Palm Harbor, FL 34684-3176.
- What is Karen Zagar's phone number?
- The practice phone number listed in the NPPES registry for Karen Zagar is (727) 789-2784.
- Does Karen Zagar accept Medicare?
- Karen Zagar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Zagar's NPI active?
- Yes — Karen Zagar's NPI (1902889587) is active in the NPPES registry as of the last update on 2016-12-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.