Christina Viola Darby, M.D.
Sleep Medicine (Psychiatry & Neurology) Physician · Anchorage, AK
Christina Viola Darby, M.D. is a sleep medicine (psychiatry & neurology) physician with a practice address in Anchorage, Alaska, and NPI 1225348592, issued on Oct 20, 2010. Check the license (Alaska 108257, as entered in NPPES) on the Alaska State Medical Board; the Medicare figures below come from public CMS files.
- Name
- Christina Viola Darby
- Credential
- M.D.
- Primary taxonomy
- Sleep Medicine (Psychiatry & Neurology) Physician 2084S0012X
- License numbers
- 108257 AK
MD 60222547 WA
Self-reported in NPPES; status is on the state search - Practice location
- 3900 Ambassador Dr, Anchorage, AK 99508
- Phone
- (907) 563-2662
- Enumerated
- Oct 20, 2010
- Record last updated
- Mar 6, 2026
- Medicaid IDs
- TEZM14RAL AK
1225348592 WA
MD9703W AK - Medicare enrollment
- Enrolled (PECOS I20160513000010); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 3900 Ambassador Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Megan Barrett-Aguilar, FNP-BCFamily Nurse Practitioner1386070084
- Michelle Dallas, FNP-CFamily Nurse Practitioner1821482506
- Anne Fleetwood, MS, RDN, LDN, CDCESRegistered Dietitian1437521713
- Amy Olson, NPFamily Nurse Practitioner1821685876
- Yifan Pang, MDMedical Oncology Physician1952758435
- Cindy Rice, R.N.Registered Nurse1548415375
Verify Christina Viola Darby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersAlaska State Medical Board
Search for license 108257Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average sleep medicine (psychiatry & neurology) physician in 2024
32 Medicare Part D claims for 13 beneficiaries, against an average of 655 among the 377 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Zolpidem Tartrate15 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): 87.1 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: $74.90
3 payments; by number, the most common kind was food and beverage; the largest payer was Actelion Pharmaceuticals US, Inc. The 278 providers of this specialty with any payment received $5,572.43 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
- Alaska Native Tribal Health ConsortiumAnchorage, AK
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sleep Medicine (Psychiatry & Neurology) Physician providers in Alaska
There are 2 sleep medicine (psychiatry & neurology) physician records in Alaska.
Other sleep medicine (psychiatry & neurology) physician records in Alaska
- Derrick Manzlak, M.D.Anchorage, AK1235429457
Common questions
What is Christina Viola Darby, M.D.'s NPI number?
Christina Viola Darby, M.D.'s National Provider Identifier (NPI) is 1225348592, issued on Oct 20, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Christina Viola Darby, M.D. located?
The NPPES record lists a practice address at 3900 Ambassador Dr, Anchorage, AK, 99508. Phone: (907) 563-2662. Providers update this record themselves, so call before visiting.
How can I verify Christina Viola Darby, M.D.'s license?
NPPES lists Alaska license number 108257, as entered by the provider. Search the Alaska State Medical Board at https://www.commerce.alaska.gov/web/cbpl/ProfessionalLicensing/StateMedicalBoard.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christina Viola Darby, M.D. prescribe under Medicare Part D?
In 2024, Christina Viola Darby, M.D. had 32 Medicare Part D claims for 13 beneficiaries; the average among sleep medicine (psychiatry & neurology) physician prescribers was 655. Part D covers Medicare prescriptions only.
What is Christina Viola Darby, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.1 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.