Karen Ellis Estrada-Stephen, MD
Obstetrics & Gynecology Physician · Gilbert, AZ
Karen Ellis Estrada-Stephen, MD is an obstetrics & gynecology physician with a practice address in Gilbert, Arizona, and NPI 1750812590, issued on Mar 23, 2017. Check the license (Arizona 63168, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Karen Ellis Estrada-Stephen
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 63168 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 3370 S Mercy RD Ste 314, Gilbert, AZ 85297
- Phone
- (480) 782-0993
- Enumerated
- Mar 23, 2017
- Record last updated
- Apr 22, 2026
- Fax
- (833) 337-0386
- Medicare enrollment
- Enrolled (PECOS I20210812002535); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 803 in Arizona → Look up another NPI →
Also registered at 3370 S Mercy RD Ste 314
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Karen Evancic, CNMAdvanced Practice Midwife1932758737
- Ramona Joseph, CNMAdvanced Practice Midwife1811092315
- Tammy Park, DNP, CNMAdvanced Practice Midwife1679357610
- Shannon Pritchett, FNP-CFamily Nurse Practitioner1124987813
- Jill Provera, CNMMidwife1477315323
Verify Karen Ellis Estrada-Stephen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 63168Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
103 Medicare Part D claims for 31 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Estradiol27 claims
- Progesterone13 claims
- Estradiol (Twice Weekly)12 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.
Industry payments in 2024: $1,780.54
11 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 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
- Arizona OB Gyn Affiliates PCChandler, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Ellis Estrada-Stephen among 803 obstetrics & gynecology physician records in Arizona
Karen Ellis Estrada-Stephen, MD is one of 803 obstetrics & gynecology physician records with a practice address in Arizona. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 83% of them.
- NPI issued2017 · 83% of these records are older, 14% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2017 · median 2005 among the 477 with a school on file
- Record last updated2026 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Arizona
There are 803 obstetrics & gynecology physician records in Arizona.
All 803 in Arizona → Every provider in Gilbert → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Erum Azhar, M.DGilbert, AZ 852971013103738
- Phillip Garza, M.D.Gilbert, AZ 852971932335890
- Sara Giali, DOGilbert, AZ 852971538134663
- Lakshmimalini Govindan, MDGilbert, AZ 852971689839391
- Sheetal Kale, MDGilbert, AZ 852971073648549
- Namita Kothari, MDGilbert, AZ 852971700957594
- Clinton Leonard, MDGilbert, AZ 852971770575920
- Christopher Murphy, M.D.Gilbert, AZ 852971215900584
Common questions
What is Karen Ellis Estrada-Stephen, MD's NPI number?
Karen Ellis Estrada-Stephen, MD's National Provider Identifier (NPI) is 1750812590, issued on Mar 23, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Karen Ellis Estrada-Stephen, MD located?
The NPPES record lists a practice address at 3370 S Mercy RD Ste 314, Gilbert, AZ, 85297. Phone: (480) 782-0993. Providers update this record themselves, so call before visiting.
How can I verify Karen Ellis Estrada-Stephen, MD's license?
NPPES lists Arizona license number 63168, 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 Karen Ellis Estrada-Stephen, MD prescribe under Medicare Part D?
In 2024, Karen Ellis Estrada-Stephen, MD had 103 Medicare Part D claims for 31 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.