George Isaac, M.D.
NPI 1588652416 · Specialist · Dubuque, IA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
George Isaac, M.D. is a Specialist provider in Dubuque, IA (NPI 1588652416).
Provider details
- NPI number
- 1588652416
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 32128 (IA)
Specialties & taxonomies
Other Service Providers
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
1,394 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 | 355 | $84 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 237 | $64 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 207 | $118 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 159 | $116 |
| X-Ray of Hand, Minimum of 3 Views73130 | 92 | $34 |
| X-Ray of Wrist, Minimum of 3 Views73110 | 70 | $37 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 996 | 155 |
| Prednisone | 728 | 156 |
| Hydroxychloroquine Sulfate | 557 | 102 |
| Allopurinol | 346 | 68 |
| Gabapentin | 342 | 64 |
| Duloxetine Hcl | 112 | 25 |
| Folic Acid | 106 | 22 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$693 across 36 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
- 2005-10-13
- Last updated
- 2007-12-07
Frequently asked questions
- What is George Isaac's NPI number?
- George Isaac's National Provider Identifier (NPI) is 1588652416, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is George Isaac's specialty?
- George Isaac is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is George Isaac located?
- George Isaac's practice location on file with NPPES is 2140 John F Kennedy Rd, Dubuque, IA 52002-3883.
- What is George Isaac's phone number?
- The practice phone number listed in the NPPES registry for George Isaac is (563) 583-4848.
- Does George Isaac accept Medicare?
- George Isaac is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is George Isaac's NPI active?
- Yes — George Isaac's NPI (1588652416) is active in the NPPES registry as of the last update on 2007-12-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.