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

Weldon John Mallgren, DO

Individual provider Psychiatry Physician · NPI 1841384021

Weldon John Mallgren, DO is a Psychiatry in Claremore, Oklahoma. Graduated from Michigan College of Medicine and Surgery in 1993, 33 years ago. Practices with Grand Lake Mental Health Center, Inc, a 120-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Oklahoma.

Years since qualifying
33
Trained at
Michigan College of Medicine and Surgery
Licensed in
OK
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

17599 S Highway 88
Claremore, OK 74017-0801
Phone: (918) 342-9530
Fax: (918) 342-9533
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 2466 (OK)

Record details

NPI number1841384021
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedOctober 3, 2006
Last updated in NPPESMarch 1, 2011
Mailing address114 W Delaware Ave, Nowata, OK 74048-2601

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolMICHIGAN COLLEGE OF MEDICINE AND SURGERY
Graduated 1993 (33 years in practice)
Group practice Grand Lake Mental Health Center, Inc. — 120 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services