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

JOSEPH A ZACHARIAS MD
NPI 1881847572
Internal Medicine in Marietta, OH

Active since October 28, 2008PECOS Enrolled
401 MATTHEW ST, MARIETTA, OH 45750(740) 374-7700(740) 374-7701 Get Directions Write a Review

NPPES record last updated: October 23, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 22, 2021, Jan 14, 2021, Dec 21, 2020 and 3 more (6 updates tracked since 2020).

About Joseph A Zacharias Md NPPES

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

JOSEPH A ZACHARIAS MD (NPI 1881847572) is an individual internal medicine provider in Marietta, Ohio, licensed in Ohio (35.095854) and active in the NPI registry since October 2008. He is enrolled in Medicare PECOS, is affiliated with Marietta Memorial Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1881847572
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJOSEPH A ZACHARIASCredential: MD
Location Address401 MATTHEW STMarietta, OH 45750-1635
Mailing AddressPo Box 449Marietta, OH 45750-0449
Phone(740) 374-7700
Fax(740) 374-7701
Sole ProprietorYes
Medical School CMSOtherGraduated 2005
Enumeration DateOctober 28, 2008
Last NPPES UpdateOctober 23, 20266 updates tracked since enumeration
NPPES CertifiedOctober 23, 2026
✔ NPI 1881847572 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in OH · 35.095854
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License 35095854 (OH)
401 MATTHEW ST, Marietta, OH 45750
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Secondary Practice Locations 2

Location 1314 S Wells StSistersville, WV 26175-1098 · Phone (304) 652-2611
Location 21106 Colegate DrMarietta, OH 45750-1323 · Phone (740) 568-2000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.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

Joseph A Zacharias 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 ID2860670551
PECOS Enrollment IDI20110628000764, I20210125000069
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

4

Medicare enrollment records show Joseph Zacharias reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Marietta Memorial Hospital
Same address
General Acute Care Hospital
401 MATTHEW ST
Marietta, OH 45750
  • Reassigned Medicare billing, Ohio enrollment
  • 411 clinicians in this Medicare group
NPI 1215936927 (740) 374-1413
Selby General Hospital
1.3 mi
Critical Access
1106 COLEGATE DR
Marietta, OH 45750
  • Reassigned Medicare billing, Ohio enrollment
  • 247 clinicians in this Medicare group
NPI 1124073465 (740) 568-2040
Mhc Physicians Inc
2.1 mi
Internal Medicine
424 HIGHLAND AVE
Williamstown, WV 26187
  • Reassigned Medicare billing, West Virginia enrollment
  • 49 clinicians in this Medicare group
NPI 1073600219 (740) 568-4190
Marietta Memorial Hospital Of Tyler County Inc
27 mi
Critical Access
314 S WELLS ST
Sistersville, WV 26175
  • Reassigned Medicare billing, West Virginia enrollment
  • 42 clinicians in this Medicare group
NPI 1811595192 (304) 652-2611

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 5

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
342 services183 patients
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.
181 services175 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
148 services148 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
94 services73 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
17 services13 patients

Hospital Affiliations CMS Care Compare 2

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

Marietta Memorial Hospital

Acute Care Hospitals · Marietta, OH
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number360147
Location401 Matthew StreetMarietta, OH 45750 · Washington County
Emergency services Birthing friendly

Selby General Hospital

Critical Access Hospitals · Marietta, OH
OwnershipVoluntary non-profit - Private
CMS Certification Number361319
Location1106 Colegate DriveMarietta, OH 45750 · Washington County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 45750 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
$126.12 typical visit price
range $54.34 – $166.65
Typical copayment $31.53 (range $13.58 – $41.66)
Most-billed visit code 99204
Established Patient
$96.44 typical visit price
range $17.10 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
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.

Referred Medical Equipment & Supplies CMS DME claims 5

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

Hospital bed, semi-electric (head and foot adjustment), with any type side rails, with mattress E0260
DME-Hospital Beds · category DB000N
2 suppliers25 claims25 services$68.92 avg. paid by Medicare
Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
2 suppliers24 claims24 services$16.65 avg. paid by Medicare
Nebulizer, with compressor E0570
DME-Other DME · category DE000N
2 suppliers16 claims16 services$4.98 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
2 suppliers23 claims23 services$82.99 avg. paid by Medicare
Standard wheelchair K0001
DME-Wheelchairs · category DD000N
2 suppliers13 claims13 services$33.13 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.

CONSTANCE J OATES FNP
Nurse Practitioner
401 MATTHEW ST, EMERGENCY DEPARTMENT
MARIETTA, OH 45750
Washington County (740) 376-1939
JANELLE A THOMAS MD
Emergency Medicine
401 MATTHEW ST, EMERGENCY DEPT
MARIETTA, OH 45750
Washington County (740) 374-1400
LEXIE MULLEN MS, CCC-SLP
Speech-Language Pathologist
401 MATTHEW ST
MARIETTA, OH 45750
Washington County (740) 374-1422
DR. DIANA WHEELER DO
Family Medicine
401 MATTHEW ST
MARIETTA, OH 45750
Washington County (740) 374-7700
JULIAN ADAM JOHN JAKUBOWSKI DO
Emergency Medicine
401 MATTHEW ST, EMERGENCY DEPARTMENT
MARIETTA, OH 45750
Washington County (740) 376-1939
GEOFFREY SIROCKMAN DO
Emergency Medicine
401 MATTHEW ST, EMERGENCY DEPARTMENT
MARIETTA, OH 45750
Washington County (740) 568-5669
PUSHPA UPRETY FNP
Nurse Practitioner (Family)
401 MATTHEW ST
MARIETTA, OH 45750
Washington County (740) 374-1494
DR. DISHA SHAH MD
Student in an Organized Health Care Education/Training Program
401 MATTHEW ST
MARIETTA, OH 45750
Washington County (740) 374-1400

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 Joseph Zacharias's NPI number?

The NPI number for Joseph Zacharias is 1881847572. It was assigned to this individual provider in the NPPES registry on October 28, 2008.

Where is Joseph Zacharias located?

Joseph Zacharias practices at 401 Matthew St, Marietta, OH 45750. The listed phone number is (740) 374-7700.

What is Joseph Zacharias's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Joseph Zacharias enrolled in Medicare?

Yes. Joseph Zacharias 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 Joseph Zacharias's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Zacharias reassigns Medicare benefits to 4 organizations: Marietta Memorial Hospital (Marietta, OH), Selby General Hospital (Marietta, OH), Mhc Physicians Inc (Williamstown, WV) and Marietta Memorial Hospital Of Tyler County Inc (Sistersville, WV). 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 Joseph Zacharias's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Joseph Zacharias accept?

Health plans from CareSource list Joseph Zacharias 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 Joseph Zacharias affiliated with any hospitals?

According to CMS data, Joseph Zacharias is affiliated with Marietta Memorial Hospital and Selby General Hospital.

When was this NPI record last updated?

The NPPES record for Joseph Zacharias was last updated on October 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.