Sarah Johanna Carstens, M.D.
Internal Medicine Physician · Phoenix, AZ
Sarah Johanna Carstens, M.D. is an internal medicine physician with a practice address in Phoenix, Arizona, and NPI 1952506867, issued on Jun 19, 2007. Check the license (Arizona 226718, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Sarah Johanna Carstens
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 226718 AZ
43273 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 1111 E Mcdowell RD, Phoenix, AZ 85006
- Phone
- (602) 000-0000
- Enumerated
- Jun 19, 2007
- Record last updated
- Sep 27, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100921000899); accepts Medicare assignment
- Medical or professional school
- University Of Arizona College Of Medicine, 2007
- Entity
- Type 1 · individual
Also registered at 1111 E Mcdowell RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hamed Abbaszadegan, MDInternal Medicine Physician1407083579
- Elissa Abbruscato, MDInternal Medicine Physician1356603021
- Mohamed Abdelhabib, MDPulmonary Disease Physician1184287161
- Anurag Adhikari, M.D.Geriatric Medicine (Internal Medicine) Physician1861137952
- Nathanael Adjei, M.D.Internal Medicine Physician1134651896
- Nimit Agarwal, MDInternal Medicine Physician1811155245
Verify Sarah Johanna Carstens in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 226718Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
182 Medicare Part D claims for 29 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 16 claims were for opioids.
Most prescribed
- Trazodone Hcl11 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): 92.3 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: $19.20
1 payment: food and beverage; the largest payer was Zoll Services LLC (a/k/a Zoll LifeCor Corp). The 50,334 providers of this specialty with any payment received $1,303.06 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
- Circle The CityPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
695 internal medicine physician records list a practice address in Phoenix
They are 695 of the 31,399 NPPES records with a practice address in Phoenix, and 2,853 internal medicine physician records in Arizona.
All 695 in Phoenix → All 2,853 in Arizona → Every provider in Phoenix →
Other internal medicine physician records in Arizona
- Daniel Aaronson, MDTucson, AZ1134865355
- Constantia Abarikwu, MDPhoenix, AZ1497832620
- Jaber Abawi, MDPayson, AZ1629038542
- Demsas Abay, MDPeoria, AZ1720312390
- Firas Abbas, M.D. M.P.H.Mesa, AZ1336481407
- Hassan Abbas, D.O.Mesa, AZ1477294775
- Jalal Abbas, M.D.Sun City West, AZ1205895034
- Tayeb Abbas, MDSun City West, AZ1093406795
- Hamed Abbaszadegan, MDPhoenix, AZ1407083579
- Kristopher Abbate, MDTucson, AZ1184112401
Common questions
What is Sarah Johanna Carstens, M.D.'s NPI number?
Sarah Johanna Carstens, M.D.'s National Provider Identifier (NPI) is 1952506867, issued on Jun 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Sarah Johanna Carstens, M.D. located?
The NPPES record lists a practice address at 1111 E Mcdowell RD, Phoenix, AZ, 85006. Phone: (602) 000-0000. Providers update this record themselves, so call before visiting.
How can I verify Sarah Johanna Carstens, M.D.'s license?
NPPES lists Arizona license number 226718, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sarah Johanna Carstens, M.D. prescribe under Medicare Part D?
In 2024, Sarah Johanna Carstens, M.D. had 182 Medicare Part D claims for 29 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Sarah Johanna Carstens, M.D.'s MIPS final score?
The 2023 MIPS final score is 92.3 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.