NPPES file of Aug 9, 2026

Harry W. Hamlyn, MD

Psychiatry Physician · Rapid City, SD

Harry W. Hamlyn, MD is a psychiatry physician with a practice address in Rapid City, South Dakota, and NPI 1801997739, issued on Sep 25, 2006. Check the license (South Dakota 4000, as entered in NPPES) on the South Dakota Board of Medical and Osteopathic Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1801997739
Name
Harry W. Hamlyn
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
4000 SD
Self-reported in NPPES; status is on the state search
Practice location
915 Mt. View Road, Rapid City, SD 57702
Phone
(605) 719-7200
Enumerated
Sep 25, 2006
Record last updated
Jan 3, 2013 (not updated in 13 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20101008000158); accepts Medicare assignment
Medical or professional school
University Of California, San Francisco School Of Medicine, 1985
Telehealth
Offers telehealth (CMS)
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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Verify Harry W. Hamlyn in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersSouth Dakota Board of Medical and Osteopathic Examiners
    Search for license 4000
    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 South Dakota license search

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7.8 times the Medicare Part D claims of the average psychiatry physician in 2024

7,771 Medicare Part D claims for 279 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.

  1. Harry Hamlyn7,771
  2. Specialty average1,000

Most prescribed

  1. Trazodone Hcl569 claims
  2. Quetiapine Fumarate361 claims
  3. Clonazepam346 claims
  4. Lamotrigine329 claims
  5. Alprazolam291 claims
  6. Aripiprazole265 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 MIPS final score for 2023 (Medicare payment program): 97.6 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score86.5
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $725.39

14 payments; by number, the most common kind was food and beverage; the largest payer was Axsome Therapeutics, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Harry Hamlyn$725.39
  2. Specialty average$4,954.93

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

  1. Monument Health Rapid City Hospital IncRapid City, SD

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

Psychiatry Physician providers in South Dakota

There are 112 psychiatry physician records in South Dakota.

Other psychiatry physician records in South Dakota

  1. Arslan Ahmed, DOFort Meade, SD1649626151
  2. Seth Ahrendt, M.D.Sioux Falls, SD1639565757
  3. Lisa Amiotte, M.D.Sioux Falls, SD1871565333
  4. Kent Andre, MDSioux Falls, SD1245425974
  5. Natalie Armijo, M.D.Sioux Falls, SD1932246881
  6. Jennifer Assam, MDSioux Falls, SD1982198776
  7. Berne Bahnson, M.D.Sioux Falls, SD1871565499
  8. Francis Bandettini, D.O.Sioux Falls, SD1942325428
  9. Christiaan Bates, MDSioux Falls, SD1235795329
  10. Abbey Bauman, MDSioux Falls, SD1467072066

Common questions

What is Harry W. Hamlyn, MD's NPI number?

Harry W. Hamlyn, MD's National Provider Identifier (NPI) is 1801997739, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Harry W. Hamlyn, MD located?

The NPPES record lists a practice address at 915 Mt. View Road, Rapid City, SD, 57702. Phone: (605) 719-7200. Providers update this record themselves, so call before visiting.

How can I verify Harry W. Hamlyn, MD's license?

NPPES lists South Dakota license number 4000, as entered by the provider. Search the South Dakota Board of Medical and Osteopathic Examiners at https://www.sdbmoe.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Harry W. Hamlyn, MD prescribe under Medicare Part D?

In 2024, Harry W. Hamlyn, MD had 7,771 Medicare Part D claims for 279 beneficiaries; the average among psychiatry physician prescribers was 1,000. Part D covers Medicare prescriptions only.

What is Harry W. Hamlyn, MD's MIPS final score?

The 2023 MIPS final score is 97.6 of 100. 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.