Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ARSEN M ZACHARIAN MD
NPI 1386802833
Hospitalist in San Antonio, TX

Active since May 30, 2008PECOS EnrolledAccepts Medicare Assignment
4502 MEDICAL DR, SAN ANTONIO, TX 78229(210) 358-4000(210) 358-8002 Get Directions Write a Review

NPPES record last updated: October 9, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 9, 2026, Mar 23, 2026, Dec 17, 2024 and 3 more (6 updates tracked since 2018).

About Arsen M Zacharian Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ARSEN M ZACHARIAN MD (NPI 1386802833) is an individual hospitalist provider in San Antonio, Texas, licensed in Texas (N7378) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS, is affiliated with Baptist Medical Center, and maintains a secondary practice location in Marble Falls.

NPPES Registry Identity

NPI1386802833
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameARSEN M ZACHARIANCredential: MD
Location Address4502 MEDICAL DRSan Antonio, TX 78229-4402
Mailing Address4502 Medical DrSan Antonio, TX 78229-4402 · (210) 358-4000 · Fax (210) 358-8002
Fax(210) 358-8002
Sole ProprietorYes
Medical School CMSOtherGraduated 1996
Enumeration DateMay 30, 2008
Last NPPES UpdateOctober 9, 20266 updates tracked since enumeration
NPPES CertifiedOctober 9, 2026
✔ NPI 1386802833 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
Licenses✔ Licensed in TX · N7378✔ Licensed in CO · DR0059873
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
Also ListedInternal MedicineTaxonomy 207R00000X · License DR0059873 (CO), N7378 (TX)
4502 MEDICAL DR, San Antonio, TX 78229

Other Names 1

Former Name (1)Arsen M Zakharyan Md

Secondary Practice Location 1

Location 1810 W Highway 71Marble Falls, TX 78654-8602 · Phone (830) 201-8000

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Arsen M Zacharian Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9638362841
PECOS Enrollment IDI20101020000999
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

10

Medicare enrollment records show Arsen Zacharian reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hospitalist
7700 FLOYD CURL DR
San Antonio, TX 78229
  • Reassigned Medicare billing, Texas enrollment
  • 681 clinicians in this Medicare group
Cardiovascular Disease
7622 LOUIS PASTEUR, SUITE 100
San Antonio, TX 78229
  • Reassigned Medicare billing, Texas enrollment
  • 233 clinicians in this Medicare group
Family Medicine
903 W MARTIN ST # MS 49-2
San Antonio, TX 78207
  • Reassigned Medicare billing, Texas enrollment
  • 1,129 clinicians in this Medicare group
Hospitalist
111 DALLAS ST
San Antonio, TX 78205
  • Reassigned Medicare billing, Texas enrollment
  • 478 clinicians in this Medicare group
Internal Medicine
1401 MEDICAL PKWY
Cedar Park, TX 78613
  • Reassigned Medicare billing, Texas enrollment
  • 828 clinicians in this Medicare group
Multi-Specialty
2701 HOSPITAL DR
Victoria, TX 77901
  • Reassigned Medicare billing, Texas enrollment
  • Medicare enrollment name: Citizens Medical Center County Of Victoria
  • 171 clinicians in this Medicare group
Emergency Medicine
8686 NEW TRAILS DR, SUITE 100
Spring, TX 77381
  • Reassigned Medicare billing, Texas enrollment
  • 180 clinicians in this Medicare group
Internal Medicine
18951 N MEMORIAL DR
Humble, TX 77338
  • Reassigned Medicare billing, Texas enrollment
  • 2,009 clinicians in this Medicare group
Rural Health
37 MEDICAL DRIVE
Gainesville, MO 65655
  • Reassigned Medicare billing, Missouri enrollment
  • 338 clinicians in this Medicare group
Hospitalist
4567 E 9TH AVE
Denver, CO 80220
  • Reassigned Medicare billing, Colorado enrollment
  • 108 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
51 services50 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Baptist Medical Center

Acute Care Hospitals · San Antonio, TX
4/5 CMS rating
OwnershipProprietary
CMS Certification Number450058
Location111 Dallas StreetSan Antonio, TX 78205 · Bexar County
Emergency services Birthing friendly

University Health System

Acute Care Hospitals · San Antonio, TX
3/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number450213
Location4502 Medical DrSan Antonio, TX 78229 · Bexar County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 78229 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.40 typical visit price
range $54.84 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Care Plan
Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…
98%190 patients4/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers11 claims11 services$12.28 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
4 suppliers47 claims47 services$86.41 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
3 suppliers30 claims30 services$35.27 avg. paid by Medicare
Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing K0738
DME-Oxygen and Supplies · category DC000N
1 supplier11 claims11 services$30.60 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Internal Medicine (Cardiovascular Disease)
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Student in an Organized Health Care Education/Training Program
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Student in an Organized Health Care Education/Training Program
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Physical Therapy Assistant
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Nurse Anesthetist, Certified Registered
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Nurse Anesthetist, Certified Registered
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Pharmacist
4502 MEDICAL DR
SAN ANTONIO, TX 78229
Hospitalist
4502 MEDICAL DR
SAN ANTONIO, TX 78229

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Arsen Zacharian's NPI number?

The NPI number for Arsen Zacharian is 1386802833. It was assigned to this individual provider in the NPPES registry on May 30, 2008. The provider is also known as Arsen M Zakharyan MD.

Where is Arsen Zacharian located?

Arsen Zacharian practices at 4502 Medical Dr, San Antonio, TX 78229. The listed phone number is (210) 358-4000.

What is Arsen Zacharian's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Arsen Zacharian enrolled in Medicare?

Yes. Arsen Zacharian is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Arsen Zacharian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Arsen Zacharian reassigns Medicare benefits to 10 organizations: Hospital Medicine Services Of Tx, PLLC (San Antonio, TX), Wellmed Networks, Inc. (San Antonio, TX), Community Medicine Associates (San Antonio, TX), Sound Inpatient Physicians Of Texas I, Inc (San Antonio, TX), Usacs Integrated Acute Care Services Of Texas, PLLC (Cedar Park, TX) and 5 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Arsen Zacharian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Arsen Zacharian accept?

Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas, Imperial Insurance Companies, Inc., Molina Healthcare and Oscar Insurance Company and 3 other insurers list Arsen Zacharian as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Arsen Zacharian affiliated with any hospitals?

According to CMS data, Arsen Zacharian is affiliated with Baptist Medical Center and University Health System.

When was this NPI record last updated?

The NPPES record for Arsen Zacharian was last updated on October 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.