Andres Zimmermann, MD
NPI 1114904422 · Geriatric Medicine (Internal Medicine) Physician · Oceanside, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andres Zimmermann, MD is a Geriatric Medicine (Internal Medicine) Physician provider in Oceanside, CA (NPI 1114904422).
Provider details
- NPI number
- 1114904422
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A71687 (CA)
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
966 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 408 | $136 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 264 | $96 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 170 | $139 |
| Advance Care Planning, First 30 Minutes99497 | 42 | $86 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 30 | $15 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 120 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 495 | 146 |
| Amlodipine Besylate | 400 | 121 |
| Losartan Potassium | 369 | 102 |
| Levothyroxine Sodium | 338 | 91 |
| Rosuvastatin Calcium | 267 | 79 |
| Lisinopril | 242 | 70 |
| Escitalopram Oxalate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$189 across 4 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
- 2005-12-28
- Last updated
- 2023-03-07
Frequently asked questions
- What is Andres Zimmermann's NPI number?
- Andres Zimmermann's National Provider Identifier (NPI) is 1114904422, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andres Zimmermann's specialty?
- Andres Zimmermann is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Andres Zimmermann located?
- Andres Zimmermann's practice location on file with NPPES is 3601 Vista Way, Oceanside, CA 92056-4559.
- What is Andres Zimmermann's phone number?
- The practice phone number listed in the NPPES registry for Andres Zimmermann is (760) 639-1714.
- Does Andres Zimmermann accept Medicare?
- Andres Zimmermann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andres Zimmermann's NPI active?
- Yes — Andres Zimmermann's NPI (1114904422) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.