Collin Brooksby Hafen, DO
Family Medicine Physician · Mount Vernon, WA
Collin Brooksby Hafen, DO is a family medicine physician with a practice address in Mount Vernon, Washington, and NPI 1770146623, issued on Apr 16, 2019. Check the license (Washington OP61336718, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Collin Brooksby Hafen
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- OP61336718 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1400 E Kincaid St, Mount Vernon, WA 98274
- Phone
- (360) 428-2501
- Enumerated
- Apr 16, 2019
- Record last updated
- Nov 8, 2022
- Fax
- (360) 428-2596
- Medicare enrollment
- Enrolled (PECOS I20221122003562); accepts Medicare assignment
- Medical or professional school
- Touro Un Col Of Osteopathic Medicine, Henderson, 2019
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 5,534 in Washington → Look up another NPI →
Also registered at 1400 E Kincaid St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniela Abreu, DOObstetrics & Gynecology Physician1770169260
- Sankar Alagugurusamy, MDGastroenterology Physician1093970576
- Aleisha Allen, PA-CSurgical Physician Assistant1700520087
- Marshall Anderson, MDOccupational Medicine Physician1417942038
- George Ang, MDEndocrinology, Diabetes & Metabolism Physician1396737326
- Melissa Ashby, MDFamily Medicine Physician1245226646
Verify Collin Brooksby Hafen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license OP61336718Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% more Medicare Part D claims than the average family medicine physician in 2024
3,886 Medicare Part D claims for 397 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 287 claims were for opioids.
Most prescribed
- Atorvastatin Calcium193 claims
- Lisinopril149 claims
- Gabapentin125 claims
- Hydrocodone-Acetaminophen97 claims
- Amlodipine Besylate95 claims
- Levothyroxine Sodium92 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.
Bills Medicare through 3 group practices
- Public Hospital Dist NO 1 SkagitMount Vernon, WA
- Select Outpatient Services IncGlenview, IL
- Select Rehabilitation, LLCGlenview, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Collin Brooksby Hafen among 5,534 family medicine physician records in Washington
Collin Brooksby Hafen, DO is one of 5,534 family medicine physician records with a practice address in Washington. 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 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2019 · median 2009 among the 3,294 with a school on file
- Record last updated2022 · 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 207Q00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
78 family medicine physician records list a practice address in Mount Vernon
They are 78 of the 1,500 NPPES records with a practice address in Mount Vernon, and 5,534 family medicine physician records in Washington.
All 5,534 in Washington → Every provider in Mount Vernon → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Melissa Ashby, MDMount Vernon, WA 982741245226646
- David Benson, M.D.Mount Vernon, WA 982741629057278
- John Erbstoeszer, MDMount Vernon, WA 982741720074875
- Roger Estep, M.D.Mount Vernon, WA 982741033112479
- Jonathan Gamson, MDMount Vernon, WA 982741639172927
- Barbara Hahn, MDMount Vernon, WA 982741073500021
- Janet Hansom, MDMount Vernon, WA 982741568465870
- Robert Jacobsen, MDMount Vernon, WA 982741205890944
Common questions
What is Collin Brooksby Hafen, DO's NPI number?
Collin Brooksby Hafen, DO's National Provider Identifier (NPI) is 1770146623, issued on Apr 16, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Collin Brooksby Hafen, DO located?
The NPPES record lists a practice address at 1400 E Kincaid St, Mount Vernon, WA, 98274. Phone: (360) 428-2501. Providers update this record themselves, so call before visiting.
How can I verify Collin Brooksby Hafen, DO's license?
NPPES lists Washington license number OP61336718, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Collin Brooksby Hafen, DO prescribe under Medicare Part D?
In 2024, Collin Brooksby Hafen, DO had 3,886 Medicare Part D claims for 397 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.