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

Kirkwood Alexander Johnston, MD

Individual provider Internal Medicine Physician · NPI 1639281066

Kirkwood Alexander Johnston, MD practises Rheumatology in Houston, Texas. Qualified in 2003, 23 years ago. Practices with Kelsey-Seybold Medical Group, PLLC, a 942-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
23
Licensed in
TX
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2727 W Holcombe Blvd
Houston, TX 77025-1669
Phone: (713) 442-0000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 1200 McKinney St Ste 473, Houston, TX 77010-2004 — (713) 442-4700
  • 2515 Business Center Dr, Pearland, TX 77584-2294 — (713) 442-7200
  • 1010 S Ponds Dr, Webster, TX 77598-1409 — (713) 442-4300

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence N3765 (TX)
Internal Medicine Physician Taxonomy 207R00000X · Licence N3765 (TX)

Record details

NPI number1639281066
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 31, 2006
Last updated in NPPESJune 9, 2021
Certification dateJune 9, 2021

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Kelsey-Seybold Medical Group, Pllc — 942 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients11
Services billed 291 a service is one billed item, such as a visit, a test or a procedure
Average patient age68

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.

Colleagues at Kelsey-Seybold Medical Group, PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 942 clinicians in the practice; 12 are shown here.

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