Dr. Chaim Vanek, M.D.
Endocrinology & Diabetes (Endocrinology, Diabetes & Metabolism Physician)
- Medicare participating
At a glance
- Medical school
- Oregon Health Sciences University School of Medicine (1999)
- Years since graduation
- 27
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 473
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1999Medical school: Oregon Health Sciences University School of Medicine
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Endocrinology, Diabetes & Metabolism Physician primary
OR license MD24264
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Ohsu Hospital and Clinics Portland, OR
- Adventist Health Portland Portland, OR
- Hillsboro Medical Center Hillsboro, OR
- Columbia Memorial Hospital Astoria, OR
- Samaritan North Lincoln Hospital Lincoln City, OR
Medical groups
- University Professional Services (1,724 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 473
- Services billed
- 614
- Patients’ average age
- 71
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 20-29 minutes | 279 | 252 |
| Telephone, internet, or electronic health record assessment and management with written report by consulting physician, at least 5 minutes | 76 | 69 |
| New patient office or other outpatient visit, 45-59 minutes | 67 | 67 |
| Telephone medical discussion with physician, 11-20 minutes | 31 | 31 |
| Established patient office or other outpatient visit, 30-39 minutes | 18 | 18 |
| Telephone medical discussion with physician, 21-30 minutes | 15 | 15 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Levothyroxine Sodium Other prescribers in Portland, OR | 514 |
| Alendronate Sodium Other prescribers in Portland, OR | 243 |
| Testosterone Cypionate Other prescribers in Portland, OR | 189 |
| Synthroid (levothyroxine sodium) Other prescribers in Portland, OR | 151 |
| Estradiol Other prescribers in Portland, OR | 142 |
| Hydrocortisone Other prescribers in Portland, OR | 140 |
| Tymlos (abaloparatide) | 70 |
| Calcitriol Other prescribers in Portland, OR | 67 |
| Genotropin (somatropin) | 66 |
| Methimazole Other prescribers in Portland, OR | 66 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 2 companies reported 2 payments worth $188 in total to this clinician.
| Kyowa Kirin, Inc. | $110 |
|---|---|
| Alexion Pharmaceuticals, Inc. | $77.73 |
| Food and Beverage | $188 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.
Industry-funded research
Named as a principal investigator on 1 industry-funded study in 2025, from 1 company. The companies reported $12,348 in research payments for these studies, mostly to the institutions running them.
- Expanded Access Program of Palopegteriparatide in Patients With Hypoparathyroidism
Ascendis Pharma Endocrinology Inc · Approved for marketing · NCT05654701
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.