Isaac Berg, M.D.
NPI 1659509149 · Internal Medicine Physician · Grand Island, NE
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Isaac Berg, M.D. is a Internal Medicine Physician provider in Grand Island, NE (NPI 1659509149).
Provider details
- NPI number
- 1659509149
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 5982 (NE)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 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
2,550 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 | 804 | $89 |
| 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 | 493 | $15 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 330 | $119 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 286 | $72 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 141 | $61 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 180 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 621 | 156 |
| Levothyroxine Sodium | 485 | 113 |
| Omeprazole | 414 | 85 |
| Pantoprazole Sodium | 379 | 108 |
| Losartan Potassium | 360 | 90 |
| Amlodipine Besylate | 295 | 82 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-06-23
- Last updated
- 2012-08-10
Frequently asked questions
- What is Isaac Berg's NPI number?
- Isaac Berg's National Provider Identifier (NPI) is 1659509149, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Isaac Berg's specialty?
- Isaac Berg is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Isaac Berg located?
- Isaac Berg's practice location on file with NPPES is 729 N Custer Ave, Grand Island, NE 68803-4311.
- What is Isaac Berg's phone number?
- The practice phone number listed in the NPPES registry for Isaac Berg is (308) 382-9266.
- Does Isaac Berg accept Medicare?
- Isaac Berg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Isaac Berg's NPI active?
- Yes — Isaac Berg's NPI (1659509149) is active in the NPPES registry as of the last update on 2012-08-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.