Catherine Isaac, M.D.
NPI 1376700070 · Internal Medicine Physician · Research Triangle Park, NC
Catherine Isaac, M.D. is a Internal Medicine Physician provider in Research Triangle Park, NC (NPI 1376700070).
Provider details
- NPI number
- 1376700070
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 201800340 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
169 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 102 | $119 |
| 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 | 45 | $15 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 22 | $120 |
Typical Medicare-allowed amounts for these services range $15–$120 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 223 | 99 |
| Amlodipine Besylate | 107 | 53 |
| Losartan Potassium | 103 | 46 |
| Levothyroxine Sodium | 83 | 40 |
| Lisinopril | 76 | 27 |
| Rosuvastatin Calcium | 66 | 34 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-05-20
- Last updated
- 2024-04-19
- Certified
- 2024-04-19
Frequently asked questions
- What is Catherine Isaac's NPI number?
- Catherine Isaac's National Provider Identifier (NPI) is 1376700070, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Isaac's specialty?
- Catherine Isaac is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Catherine Isaac located?
- Catherine Isaac's practice location on file with NPPES is 600 Park Offices Dr Ste 140, Research Triangle Park, NC 27709-1009.
- What is Catherine Isaac's phone number?
- The practice phone number listed in the NPPES registry for Catherine Isaac is (919) 425-5864.
- Is Catherine Isaac's NPI active?
- Yes — Catherine Isaac's NPI (1376700070) is active in the NPPES registry as of the last update on 2024-04-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.