Dr. Siddika E. Karakas, MD
- Medicare services, 2021
- 32
- Part D claims, 2021
- 83
- Publications
- 5
- Hospital affiliations
- 1
- Industry payments
- $86
- Practice address
- 2315 Stockton Boulevard, Sacramento, CA 95817
- Practice phone
- Call (916) 734-2011
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Karakas' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Siddika E. Karakas is an endocrinologist in Sacramento, California
Dr. Karakas practices at UC Davis Medical Center in Sacramento, California, part of University of California Health.
Dr. Karakas' NPI, 1386629970, was assigned on December 7, 2005. Dr. Karakas graduated from Hacettepe University FOM in 1973. Dr. Karakas holds California license A33466.
- NPI
- 1386629970NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7719051432
- NPI enumeration date
- December 7, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (916) 734-2011
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 79
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Siddika E. Karakas practices at UC Davis Medical Center in Sacramento, California
Dr. Karakas' primary practice is UC Davis Medical Center, at 2315 Stockton Boulevard, Sacramento, CA 95817 in Sacramento County. The practice phone is (916) 734-2011.
- UC Davis Medical Center2315 Stockton Boulevard, Sacramento, CA 95817 · Sacramento CountyPhone(916) 734-2011
Source: Dmand AI Affiliation Data
Dr. Siddika E. Karakas is affiliated with 2 sites of care and 1 medical group
Dr. Karakas' primary practice is UC Davis Medical Center in Sacramento, California, part of University of California Health. The medical group on file is UC Davis Medical Group. Dmand AI also links Dr. Karakas to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Siddika E. Karakas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Karakas practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UC Davis Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Siddika E. Karakas is one of 1,062 endocrinologists in California
Endocrinology, diabetes and metabolism is Dr. Karakas' primary specialty in the NPI Registry, under taxonomy code 207RE0101X. Dr. Karakas is board certified in endocrinology, diabetes and metabolism by the American Board of Internal Medicine. Dmand AI has Dr. Karakas' licenses on file in 3 states: California, Illinois and Michigan.
Specialties and state licenses
- Endocrinology, diabetes and metabolism, CaliforniaPrimary
- Illinois license
- Michigan license
Endocrinologists near Dr. Karakas
Counts of endocrinologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Siddika E. Karakas billed Medicare for 32 services in 2021
CMS data shows 32 Medicare services from Dr. Karakas across 1 procedure code in 2021, all of them office visits. Medicare paid $2,101 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Karakas' Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 342021: 326%
Dr. Karakas compared with the California median for endocrinologists, 2021
- Dr. Karakas
- California median
- Medicare services
- 32vs 67595% below
- Part D claims
- 83vs 1,10492% below
Medians across 994 endocrinologists in California with Dmand AI profiles that report each measure.
Dr. Karakas' most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Karakas?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Karakas and other endocrinologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Siddika E. Karakas' patients have a median age of 39
Across all payers, Dmand AI patient panel data puts Dr. Karakas' median patient age at 39, with 83% women.
Dr. Karakas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 39
Patient panel by sex, all payers
- Women83%
- Men17%
Source: Dmand AI Patient Panel Data
Dr. Siddika E. Karakas wrote 83 Medicare Part D claims in 2021
In 2021, Dr. Karakas wrote 83 Medicare Part D claims. Every claim was for a generic drug. They cover 4 drugs, with $2,366 in total drug cost. In 2020, CMS named 183 claims across 9 drugs.
Dr. Karakas' most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 1832021: 8355%
Drugs named by CMS: 4 in 2021, 9 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Siddika E. Karakas takes part in Medicare
Dr. Karakas accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Siddika E. Karakas has 5 publications on record
Dmand AI links 5 papers to Dr. Karakas.
Recent publications by Dr. Karakas
See who Dr. Karakas researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Karakas works with, so you can find a warm path to the right endocrinologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Siddika E. Karakas received $86 in industry payments in 2018
CMS Open Payments shows 1 general payment to Dr. Karakas from 1 drug or device company in 2018. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $86.
Companies that paid Dr. Karakas the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Siddika E. Karakas has 1 award and honors on record
Dmand AI lists 1 award for Dr. Karakas, most recently CMS Stage 1 EHR in 2012.
Awards and honors for Dr. Karakas
- 2012
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Siddika E. Karakas graduated from Hacettepe University FOM
Dr. Karakas graduated from Hacettepe University FOM in 1973.
- Medical school
- Board certified in endocrinology, diabetes and metabolism
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Siddika E. Karakas accepts plans from 7 insurance carriers
Dr. Karakas is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- NV State Medicaid
Plan types Dr. Karakas accepts, by number of carriers
- Medicare6
- PPO6
- HMO3
- POS3
- EPO1
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Siddika E. Karakas's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Siddika E. Karakas
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Siddika E. Karakas' NPI number?
Dr. Siddika E. Karakas' NPI number is 1386629970. It was assigned on December 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Siddika E. Karakas?
Dr. Siddika E. Karakas is an endocrinologist in Sacramento, California. The primary specialty in the NPI Registry is Endocrinology, Diabetes & Metabolism Physician (taxonomy code 207RE0101X).
Where does Dr. Siddika E. Karakas practice?
Dr. Karakas practices at 2315 Stockton Boulevard, Sacramento, CA 95817. Dr. Karakas' primary practice is UC Davis Medical Center in Sacramento, California, part of University of California Health. Dmand AI also links Dr. Karakas to 1 group practice or clinic.
What is Dr. Siddika E. Karakas' office phone number?
The practice phone on file for Dr. Karakas is (916) 734-2011.
What is Dr. Siddika E. Karakas' medical license number?
Dr. Karakas holds California license A33466, one of the licenses on file in 3 states.
Which states has Dr. Siddika E. Karakas been licensed in?
Dmand AI has state licenses on file for Dr. Karakas in California (1979 to 2026), Illinois (since 1977) and Michigan (1975 to 1995).
Which hospitals is Dr. Siddika E. Karakas affiliated with?
Dr. Karakas practices at UC Davis Medical Center in Sacramento, California.
What medical group is Dr. Siddika E. Karakas part of?
Dr. Karakas is linked to UC Davis Medical Group.
Does Dr. Siddika E. Karakas accept Medicare?
Yes. CMS data shows Dr. Karakas billed Medicare for 32 services in 2021, and Dr. Karakas accepts Medicare assignment.
Is Dr. Siddika E. Karakas board certified?
Yes. Dr. Karakas is board certified in endocrinology, diabetes and metabolism by the American Board of Internal Medicine.
Show 7 more questionsShow fewer questions
What services does Dr. Siddika E. Karakas bill to Medicare?
In 2021, Dr. Karakas' most billed Medicare services were office visit, established patient (99214).
Where did Dr. Siddika E. Karakas go to medical school?
Dr. Karakas graduated from Hacettepe University FOM in 1973.
What drugs does Dr. Siddika E. Karakas prescribe most?
In 2021 Medicare Part D data, Dr. Karakas' most prescribed drugs by claims were Levothyroxine Sodium, Hydrocortisone and Finasteride.
Has Dr. Siddika E. Karakas received payments from drug or device companies?
CMS Open Payments shows $86 in general payments to Dr. Karakas from 1 company from 2018 to 2018. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Siddika E. Karakas been practicing?
Dr. Karakas graduated from medical school in 1973, 53 years ago.
Does Dr. Siddika E. Karakas do research?
Dmand AI links 5 publications to Dr. Karakas.
What insurance does Dr. Siddika E. Karakas accept?
Dr. Karakas is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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