NPPES file of Aug 9, 2026

Carolyn A. Sites, DO

Internal Medicine Physician · Milwaukie, OR

Carolyn A. Sites, DO is an internal medicine physician with a practice address in Milwaukie, Oregon, and NPI 1790718310, issued on Jul 8, 2006. Check the license (Oregon DO20605, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1790718310
Name
Carolyn A. Sites
Credential
DO
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
DO20605 OR
Self-reported in NPPES; status is on the state search
Practice location
10150 SE 32ND Ave, Milwaukie, OR 97222
Phone
(503) 513-8641
Enumerated
Jul 8, 2006
Record last updated
Aug 19, 2025
Medicaid ID
288443 OR
Medicare enrollment
Enrolled (PECOS I20051027001077); accepts Medicare assignment
Medical or professional school
Kansas City University Of Med & Biosciences, College Of Osteo Med, 1996
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 10150 SE 32ND Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Andrew Balster, MDInternal Medicine Physician1356803159
  2. Anne Breitinger, MDGastroenterology Physician1871772442
  3. Lindsey Burdick, MSPTPhysical Therapist1992915904
  4. Sheri Burk, MSPTPhysical Therapist1437368677
  5. Rhett Butler, M.D.Hospitalist Physician1275979171
  6. Michael Chan, M.D.Diagnostic Radiology Physician1851319016

Verify Carolyn A. Sites in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOregon Medical Board
    Search for license DO20605
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Oregon license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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100% fewer Medicare Part D claims than the average internal medicine physician in 2024

12 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Carolyn Sites12
  2. Specialty average3,176

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Providence Health And Services OregonNewberg, OR

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Carolyn A. Sites among 2,116 internal medicine physician records in Oregon

Carolyn A. Sites, DO is one of 2,116 internal medicine physician records with a practice address in Oregon. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.

  • NPI issued2006 · 7% of these records are older, 54% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated1996 · median 2008 among the 1,232 with a school on file
  • Record last updated2025 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

22 internal medicine physician records list a practice address in Milwaukie

They are 22 of the 1,998 NPPES records with a practice address in Milwaukie, and 2,116 internal medicine physician records in Oregon.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Rhonda Brown, MDMilwaukie, OR 972221083935787
  2. Gregory Camp, MDMilwaukie, OR 972221912122698
  3. Stacie Carney, MDMilwaukie, OR 972221154527042
  4. Swapna Chennareddygari, MBBSMilwaukie, OR 972221558565150
  5. Deborah Frost, MDMilwaukie, OR 972221427003888
  6. Lisa Joyner, M.D.Milwaukie, OR 972221821216508
  7. David Maslen, MDMilwaukie, OR 972221033192521
  8. Dennis Mayer, MDMilwaukie, OR 972221235112723

Common questions

What is Carolyn A. Sites, DO's NPI number?

Carolyn A. Sites, DO's National Provider Identifier (NPI) is 1790718310, issued on Jul 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Carolyn A. Sites, DO located?

The NPPES record lists a practice address at 10150 SE 32ND Ave, Milwaukie, OR, 97222. Phone: (503) 513-8641. Providers update this record themselves, so call before visiting.

How can I verify Carolyn A. Sites, DO's license?

NPPES lists Oregon license number DO20605, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Carolyn A. Sites, DO prescribe under Medicare Part D?

In 2024, Carolyn A. Sites, DO had 12 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.