Erin Watson Massey, MD
Obstetrics & Gynecology Physician · Corvallis, OR
Erin Watson Massey, MD is an obstetrics & gynecology physician with a practice address in Corvallis, Oregon, and NPI 1457478620, issued on Mar 23, 2007. Check the license (Oregon MD170377, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Erin Watson Massey
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- MD170377 OR
0101243984 VA
Self-reported in NPPES; status is on the state search - Practice location
- 3640 NW Samaritan Dr Ste 220, Corvallis, OR 97330
- Phone
- (541) 768-5300
- Enumerated
- Mar 23, 2007
- Record last updated
- Mar 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 500688795 OR
- Medicare enrollment
- Enrolled (PECOS I20150818005518); accepts Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 654 in Oregon → Look up another NPI →
Also registered at 3640 NW Samaritan Dr Ste 220
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Katherine Bowen, CNMAdvanced Practice Midwife1801315239
- Jennifer Brewer, M.D.Obstetrics & Gynecology Physician1467771295
- Susan Corcoran, FNP, CNMNurse Practitioner1902863467
- Tamme Davis, DOObstetrics & Gynecology Physician1023225885
- Jennifer Ham, CNMAdvanced Practice Midwife1568759801
- Samantha Hendrickson, RNMidwife1609469451
Verify Erin Watson Massey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD170377Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
169 Medicare Part D claims for 45 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol55 claims
- Acyclovir24 claims
- Estradiol (Twice Weekly)14 claims
- Progesterone14 claims
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.
The practice group's MIPS final score for 2023 (Medicare payment program): 93.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $63.04
2 payments; by number, the most common kind was food and beverage; the largest payer was Sanofi Pasteur Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Good Samaritan Hospital CorvallisCorvallis, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Erin Watson Massey among 654 obstetrics & gynecology physician records in Oregon
Erin Watson Massey, MD is one of 654 obstetrics & gynecology 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 2007, is newer than 52% of them.
- NPI issued2007 · 52% of these records are older, 40% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2007 · median 2007 among the 413 with a school on file
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Oregon
There are 654 obstetrics & gynecology physician records in Oregon.
All 654 in Oregon → Every provider in Corvallis → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Jennifer Brewer, M.D.Corvallis, OR 973301467771295
- Amy Card, M.D.Corvallis, OR 973301568411130
- Michelle Curtis, M.D.Corvallis, OR 973301396794756
- Tamme Davis, DOCorvallis, OR 973301023225885
- Linda Fox, M.D.Corvallis, OR 973301366488041
- Nicole Kruppa, MDCorvallis, OR 973301437446408
- Amey Lee, M.D.Corvallis, OR 973301396795266
- Craig Mayr, MD, PHDCorvallis, OR 973301437487238
Common questions
What is Erin Watson Massey, MD's NPI number?
Erin Watson Massey, MD's National Provider Identifier (NPI) is 1457478620, issued on Mar 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Erin Watson Massey, MD located?
The NPPES record lists a practice address at 3640 NW Samaritan Dr Ste 220, Corvallis, OR, 97330. Phone: (541) 768-5300. Providers update this record themselves, so call before visiting.
How can I verify Erin Watson Massey, MD's license?
NPPES lists Oregon license number MD170377, 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 Erin Watson Massey, MD prescribe under Medicare Part D?
In 2024, Erin Watson Massey, MD had 169 Medicare Part D claims for 45 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Erin Watson Massey, MD's MIPS final score?
The 2023 MIPS final score is 93.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.