Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Michael Sachio Nakazawa, MD, PHD

Individual provider Internal Medicine Physician · NPI 1265963474

Michael Sachio Nakazawa, MD, PHD practises Internal Medicine in Houston, Texas. Qualified in 2017, 9 years ago. Practices with Physicians Referral Service, a 2,727-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
9
Licensed in
TX
In the registry since
2017
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1515 Holcombe Blvd
Houston, TX 77030-4000
Phone: (713) 792-6161
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence T0580 (TX)

Record details

NPI number1265963474
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedMarch 21, 2017
Last updated in NPPESOctober 29, 2021
Certification dateOctober 29, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Physicians Referral Service — 2727 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients76
Services billed 219 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Affiliated with 1 hospital, which CMS identifies by certification number only.

Colleagues at Physicians Referral Service

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2727 clinicians in the practice; 12 are shown here.

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