Mariann Alperin, MD, MS - Medicare Obstetrics/gynecology in Encinitas, CA

Mariann Alperin, MD, MS is a medicare enrolled "Obstetrics & Gynecology - Female Pelvic Medicine And Reconstructive Surgery" physician in Encinitas, California. She went to Saint Louis University School Of Medicine and graduated in 2001 and has 24 years of diverse experience with area of expertise as Obstetrics/gynecology. She is a member of the group practice Regents Of The University Of California and her current practice location is 1200 Garden View Rd, Encinitas, California. You can reach out to her office (for appointments etc.) via phone at (800) 926-8273.

Mariann Alperin is licensed to practice in California (license number A102879) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1033266879.

Contact Information

Mariann Alperin, MD, MS
1200 Garden View Rd,
Encinitas, CA 92024-2477
(800) 926-8273
(888) 539-8781

Map and Direction




Physician's Profile

Full NameMariann Alperin
GenderFemale
SpecialityObstetrics/gynecology
Experience24 Years
Location1200 Garden View Rd, Encinitas, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Mariann Alperin attended and graduated from Saint Louis University School Of Medicine in 2001
  NPI Data:
  • NPI Number: 1033266879
  • Provider Enumeration Date: 01/04/2007
  • Last Update Date: 11/21/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 7618997263
  • Enrollment ID: I20081213000154

Medical Identifiers

Medical identifiers for Mariann Alperin such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1033266879NPI-NPPES
101462586MedicaidPA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207VF0040XObstetrics & Gynecology - Female Pelvic Medicine And Reconstructive Surgery A102879 (California)Primary
207V00000XObstetrics & Gynecology A102879 (California)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Uc San Diego Health Hillcrest - Hillcrest Med CtrSan diego, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Regents Of The University Of California35774767611890

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Mariann Alperin allows following entities to bill medicare on her behalf.
Entity NameRegents Of The University Of California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1174626618
PECOS PAC ID: 3577476761
Enrollment ID: O20031209001111

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Mariann Alperin is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Mariann Alperin, MD, MS
File 57326,
Los Angeles, CA 90074-7326

Ph: () -
Mariann Alperin, MD, MS
1200 Garden View Rd,
Encinitas, CA 92024-2477

Ph: (800) 926-8273

Reviews and Comments


Obstetrics & Gynecology Doctors in Encinitas, CA

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Douglas K. Fenton, M.D.
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Dr. Einat R. Duhamel, M.D.
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Dr. Ramez Nassef Eskander, M.D
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Practice Location: 1200 Garden View Rd, Encinitas, CA 92024
Phone: 800-926-8273    Fax: 888-539-8781
Dr. Dina Fainman, MD
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Practice Location: 310 Santa Fe Dr, Suite 204, Encinitas, CA 92024
Phone: 760-633-7245    Fax: 760-633-7093
Dr. Lily Jenny Tsai, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 310 Santa Fe Dr, Encinitas, CA 92024
Phone: 760-633-7245    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

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