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

Grant Oakley, DO

Individual provider Nephrology Physician · NPI 1679927537

Grant Oakley, DO is a Nephrology in Portland, Maine. Graduated from Lake Erie College of Osteopathic Medicine, Erie in 2016, 10 years ago. Practices with Mainehealth, a 2,615-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Maine and North Carolina.

Years since qualifying
10
Trained at
Lake Erie College of Osteopathic Medicine, Erie
Licensed in
ME, NC
In the registry since
2016
Specialties on file
2
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.

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Practice location Address checks out

1600 Congress St Ste B
Portland, ME 04102-2148
Phone: (207) 774-5222
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 22 Bramhall St, Portland, ME 04102-3134 — (207) 662-0111

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence DO3180 (ME)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X · Licence 218471 (NC)

Record details

NPI number1679927537
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 18, 2016
Last updated in NPPESAugust 3, 2021
Certification dateAugust 3, 2021
Mailing address1600 Congress St Ste B, Portland, ME 04102-2148

Medicare enrollment

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

Medicare specialtyNEPHROLOGY
Medical schoolLAKE ERIE COLLEGE OF OSTEOPATHIC MEDICINE, ERIE
Graduated 2016 (10 years in practice)
Group practice Mainehealth — 2615 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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