Nathaniel Pierce Roysden, M.D.
Psychiatry Physician · Denver, CO
Nathaniel Pierce Roysden, M.D. is a psychiatry physician with a practice address in Denver, Colorado, and NPI 1598129215, issued on Apr 8, 2016. Check the license (Colorado DR.0063935, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Nathaniel Pierce Roysden
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- DR.0063935 CO
Self-reported in NPPES; status is on the state search - Practice location
- 10350 E Dakota Ave Ste B, Denver, CO 80247
- Phone
- (303) 338-4545
- Enumerated
- Apr 8, 2016
- Record last updated
- Jun 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200720000060); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2016
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 990 in Colorado → Look up another NPI →
Also registered at 10350 E Dakota Ave Ste B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joe Barfoot, LCSWClinical Social Worker1962528588
- Christopher Bayley, M.D.Psychiatry Physician1023176336
- Edward Buckingham, MDChild & Adolescent Psychiatry Physician1871790816
- Bryan CobbPsychiatry Physician1295197960
- Amy Conley, LCSWClinical Social Worker1568627016
- Tyrel Dixon, LCSWClinical Social Worker1659910180
Verify Nathaniel Pierce Roysden in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0063935Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% more Medicare Part D claims than the average psychiatry physician in 2024
1,082 Medicare Part D claims for 158 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims.
Most prescribed
- Sertraline Hcl101 claims
- Escitalopram Oxalate84 claims
- Trazodone Hcl77 claims
- Bupropion Xl74 claims
- Fluoxetine Hcl73 claims
- Lorazepam55 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 one group practice
- Colorado Permanente Medical Group PCDenver, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathaniel Pierce Roysden among 990 psychiatry physician records in Colorado
Nathaniel Pierce Roysden, M.D. is one of 990 psychiatry physician records with a practice address in Colorado. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 79% of them.
- NPI issued2016 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 35% of these records are
- Graduated2016 · median 2009 among the 351 with a school on file
- Record last updated2021 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
291 psychiatry physician records list a practice address in Denver
They are 291 of the 25,068 NPPES records with a practice address in Denver, and 990 psychiatry physician records in Colorado.
All 990 in Colorado → Every provider in Denver → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Christopher Bayley, M.D.Denver, CO 802471023176336
- Lee Clark, M.D.Denver, CO 802471497899272
- Catherine Corsello, MDDenver, CO 802471770610792
- Lori Greene, MDDenver, CO 802471013051721
- Holly Greenfield, MDDenver, CO 802471790815553
- David Handley, MDDenver, CO 802471477609097
- Joyce Kobayashi, MDDenver, CO 802471033127196
- Jonathan Kusumi, MDDenver, CO 802471427104108
Common questions
What is Nathaniel Pierce Roysden, M.D.'s NPI number?
Nathaniel Pierce Roysden, M.D.'s National Provider Identifier (NPI) is 1598129215, issued on Apr 8, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Nathaniel Pierce Roysden, M.D. located?
The NPPES record lists a practice address at 10350 E Dakota Ave Ste B, Denver, CO, 80247. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.
How can I verify Nathaniel Pierce Roysden, M.D.'s license?
NPPES lists Colorado license number DR.0063935, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nathaniel Pierce Roysden, M.D. prescribe under Medicare Part D?
In 2024, Nathaniel Pierce Roysden, M.D. had 1,082 Medicare Part D claims for 158 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.