MARKKUS HASYCHAK DO
NPI 1912657503
Family Medicine in San Jose, CA
About Markkus Hasychak Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARKKUS HASYCHAK DO (NPI 1912657503) is an individual family medicine provider in San Jose, California, licensed in California (20A22004) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS and is a graduate of Touro Un Col Of Osteopathic Medicine, Henderson (2022).
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
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
Markkus Hasychak Do 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.
Medicare Billing Reassignments
2Medicare enrollment records show Markkus Hasychak reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 clinicians in this Medicare group
Newark, CA 94560
- Reassigned Medicare billing, California enrollment
- 435 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95120 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Markkus Hasychak's NPI number?
The NPI number for Markkus Hasychak is 1912657503. It was assigned to this individual provider in the NPPES registry on March 25, 2022.
Where is Markkus Hasychak located?
Markkus Hasychak practices at 6475 Camden Ave Ste 105, San Jose, CA 95120. The listed phone number is (408) 997-9155.
What is Markkus Hasychak's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Markkus Hasychak enrolled in Medicare?
Yes. Markkus Hasychak 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 Markkus Hasychak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Markkus Hasychak reassigns Medicare benefits to 2 organizations: Stanford Health Care (Stanford, CA) and University Healthcare Alliance (Newark, CA). 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 Markkus Hasychak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Markkus Hasychak was last updated on August 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.
# Markkus Hasychak, DO · NPI 1912657503
Family Medicine physician in San Jose, California. Individual provider, active in the CMS NPPES registry since March 25, 2022.
## Identity
- **NPI:** 1912657503 (Entity type: Individual)
- **Enumerated:** March 25, 2022
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 20A22004 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 6475 CAMDEN AVE STE 105, San Jose, CA 95120-2847
- **Phone:** (408) 997-9155
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Stanford Health Care (NPI 1437292927, Stanford, CA); University Healthcare Alliance (NPI 1760531198, Newark, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Touro Un Col Of Osteopathic Medicine, Henderson, class of 2022
## Record status
- **NPPES last updated:** August 14, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1912657503) · Data from the CMS NPPES public registry.