Gregory R Mason, MD - Medicare Pulmonary Disease in Torrance, CA

Gregory R Mason, MD is a medicare enrolled "Internal Medicine - Pulmonary Disease" physician in Torrance, California. He went to Indiana University School Of Medicine and graduated in 1974 and has 50 years of diverse experience with area of expertise as Pulmonary Disease. He is a member of the group practice Prohealth Partners, A Medical Group and his current practice location is 21840 Normandie Ave, Ste. 700, Torrance, California. You can reach out to his office (for appointments etc.) via phone at (310) 222-5101.

Gregory R Mason is licensed to practice in California (license number C36997) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1841247145.

Contact Information

Gregory R Mason, MD
21840 Normandie Ave, Ste. 700,
Torrance, CA 90502-2047
(310) 222-5101
(310) 320-5463



Physician's Profile

Full NameGregory R Mason
GenderMale
SpecialityPulmonary Disease
Experience50 Years
Location21840 Normandie Ave, Torrance, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Gregory R Mason attended and graduated from Indiana University School Of Medicine in 1974
  NPI Data:
  • NPI Number: 1841247145
  • Provider Enumeration Date: 05/30/2006
  • Last Update Date: 05/16/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 5890976336
  • Enrollment ID: I20110216001093

Medical Identifiers

Medical identifiers for Gregory R Mason such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1841247145NPI-NPPES
CH1382OtherCARAILROAD MEDICARE
M050376OtherCAGROUP
DA6447OtherCARAILROAD MEDICARE
00C369970MedicaidCA
W14940OtherCAGROUP

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RP1001XInternal Medicine - Pulmonary Disease C36997 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Prohealth Partners, A Medical Group2769388412233

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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. Gregory R Mason allows following entities to bill medicare on his behalf.
Entity NameProhealth Partners, A Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1003949975
PECOS PAC ID: 2769388412
Enrollment ID: O20031211000927

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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. Gregory R Mason 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
Gregory R Mason, MD
21840 Normandie Ave, Ste. 700,
Torrance, CA 90502-2047

Ph: (310) 222-5101
Gregory R Mason, MD
21840 Normandie Ave, Ste. 700,
Torrance, CA 90502-2047

Ph: (310) 222-5101

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Internal Medicine Doctors in Torrance, CA

Deborah Chon, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 3445 Pacific Coast Hwy Ste 100, Torrance, CA 90505
Phone: 310-542-6333    
Erika Joyce Kalash, D.O.
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 3565 Del Amo Blvd, Torrance, CA 90503
Phone: 310-214-0811    
Hosayn Khaleeli, MD
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 2245 Sepulveda Blvd, Torrance, CA 90501
Phone: 310-320-3204    Fax: 310-320-0919
Mr. Anthony C Dike, MD
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 20280 S Vermont Ave Ste 215, Torrance, CA 90502
Phone: 323-434-4626    Fax: 310-693-8082
Paul J Brown, M.D.
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 3333 Skypark Dr, Torrance, CA 90505
Phone: 310-517-9006    
Dr. Philip W Chung, M.D.
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 2841 Lomita Blvd 215, Torrance, CA 90505
Phone: 310-379-2860    Fax: 310-325-1144
Dr. Diane Jennifer Prager, MD
Pulmonary Disease
Medicare: Accepting Medicare Assignments
Practice Location: 3445 Pacific Coast Hwy Ste 300, Torrance, CA 90505
Phone: 310-325-8252    

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