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Internal Medicine

Jose C. Zarzuela, MD

Sees patients in Arnold, MD · Maryland

Summary

Dr. Jose C. Zarzuela, MD is an internal medicine doctor at 1509 Ritchie Hwy, Arnold, MD 21012. Phone: (410) 757-7600. Accepts Medicare assignment. In 2024, Jose C. Zarzuela had 397 Original Medicare patients and 3,748 services. NPI 1699898965. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 1509 Ritchie Hwy, Arnold, MD 21012 · Directions
  • Phone: (410) 757‑7600
  • Medicare: Accepts Medicare assignment
  • Group practice: Maryland Primary Care Physicians, LLC
  • Medical school: University Of Maryland School Of Medicine · graduated 1994 (32 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Jose C. Zarzuela, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Jose C. Zarzuela accept Medicare assignment?
Yes. Medicare's clinician data says Jose C. Zarzuela accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Jose C. Zarzuela see?
In 2024, CMS data shows 397 Original Medicare patients and 3,748 services for Jose C. Zarzuela. This counts Original Medicare only and measures volume, not quality.
What is Jose C. Zarzuela's NPI number?
1699898965. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Jose C. Zarzuela, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients397
Services billed to Medicare3,748
Different services or procedures84
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)442 services
  2. Insertion of needle into vein for collection of blood sample (36415)369 services
  3. 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's (G2211)301 services
  4. Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)262 services
  5. Blood test, lipids (cholesterol and triglycerides) (80061)229 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol75%
  • High blood pressure74%
  • Arthritis44%
  • Diabetes29%
  • Ischemic heart disease26%
  • Anxiety26%

Practice locations

Addresses where Jose C. Zarzuela is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Jose C. Zarzuela as a member of this group (CMS data updated October 2, 2026).

  • Maryland Primary Care Physicians, LLC99 clinicians in the group

Specialties

Find other Internal Medicine doctors in Maryland →

Other internal medicine doctors in Arnold

Clinicians with the same Medicare primary specialty in Arnold, MD — not a recommendation.

All internal medicine doctors in Arnold →

Other clinicians in Maryland Primary Care Physicians, LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Maryland School Of Medicine
Graduation year1994 (32 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1699898965
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians