Charles Kaplan, MD
NPI 1538117536 · Internal Medicine Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Kaplan, MD is a Internal Medicine Physician provider in Tucson, AZ (NPI 1538117536).
Provider details
- NPI number
- 1538117536
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 15968 (AZ)
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
4,710 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 503 | $9 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 405 | $10 |
| Manual Urinalysis Test With Examination Using Microscope, Automated81001 | 385 | $3 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 351 | $91 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 341 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 333 | $129 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 214 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 871 | 239 |
| Atorvastatin Calcium | 595 | 170 |
| Lisinopril | 544 | 162 |
| Gabapentin | 537 | 143 |
| Amlodipine Besylate | 532 | 157 |
| Losartan Potassium | 420 | 126 |
| Simvastatin | 381 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$124 across 7 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
- 2006-05-04
- Last updated
- 2009-05-13
Frequently asked questions
- What is Charles Kaplan's NPI number?
- Charles Kaplan's National Provider Identifier (NPI) is 1538117536, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Kaplan's specialty?
- Charles Kaplan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Kaplan located?
- Charles Kaplan's practice location on file with NPPES is 5880 N La Cholla Blvd, Tucson, AZ 85741.
- What is Charles Kaplan's phone number?
- The practice phone number listed in the NPPES registry for Charles Kaplan is (520) 751-3695.
- Does Charles Kaplan accept Medicare?
- Charles Kaplan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Kaplan's NPI active?
- Yes — Charles Kaplan's NPI (1538117536) is active in the NPPES registry as of the last update on 2009-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.