Isao Iwata, M.D.
NPI 1295921773 · Geriatric Medicine (Internal Medicine) Physician · Plainsboro, NJ
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Isao Iwata, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in Plainsboro, NJ (NPI 1295921773).
Provider details
- NPI number
- 1295921773
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA09972900 (NJ)
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
1,002 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 | 274 | $107 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 158 | $70 |
| 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 | 157 | $17 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 101 | $9 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 83 | $118 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 83 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 433 | 145 |
| Rosuvastatin Calcium | 258 | 76 |
| Amlodipine Besylate | 251 | 86 |
| Levothyroxine Sodium | 144 | 46 |
| Hydrochlorothiazide | 128 | 38 |
| Losartan Potassium | 127 | 43 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-09-19
- Last updated
- 2021-09-30
- Certified
- 2021-06-10
Frequently asked questions
- What is Isao Iwata's NPI number?
- Isao Iwata's National Provider Identifier (NPI) is 1295921773, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Isao Iwata's specialty?
- Isao Iwata is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Isao Iwata located?
- Isao Iwata's practice location on file with NPPES is 5 Plainsboro Rd Ste 300, Plainsboro, NJ 08536-1915.
- What is Isao Iwata's phone number?
- The practice phone number listed in the NPPES registry for Isao Iwata is (609) 853-7272.
- Does Isao Iwata accept Medicare?
- Isao Iwata is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Isao Iwata's NPI active?
- Yes — Isao Iwata's NPI (1295921773) is active in the NPPES registry as of the last update on 2021-09-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.