Mr John Steven Portwood, MD - Orthopaedic Surgery in Riverside, CA

Mr John Steven Portwood, MD is a Orthopaedic Surgery physician based in Riverside, California. Mr John Steven Portwood is licensed to practice in California (license number G51596) and his current practice location is 3838 Sherman Dr, Suite 2, Riverside, California. He can be reached at his office (for appointments etc.) via phone at (951) 354-7270.

NPI number for Mr John Steven Portwood is 1255393492 and his current mailing address is 3838 Sherman Dr, Suite 2, Riverside, California. He does not participate in medicare program and thus does not accept medicare assignments. His NPI Number is 1255393492.

Contact Information

Mr John Steven Portwood, MD
3838 Sherman Dr, Suite 2,
Riverside, CA 92503-4001
(951) 354-7270
(951) 354-0625

Map and Direction




Physician's Profile

Full NameMr John Steven Portwood
GenderMale
SpecialityOrthopaedic Surgery
Location3838 Sherman Dr, Riverside, California
Accepts Medicare AssignmentsDoes not participate in Medicare Program. He may not accept medicare assignment.
  NPI Data:
  • NPI Number: 1255393492
  • Provider Enumeration Date: 04/04/2006
  • Last Update Date: 03/02/2010

Medical Identifiers

Medical identifiers for Mr John Steven Portwood such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1255393492NPI-NPPES
00G546710MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207XX0004XOrthopaedic Surgery - Foot And Ankle Surgery G51596 (California)Secondary
207XX0801XOrthopaedic Surgery - Orthopaedic Trauma G51596 (California)Secondary
207XS0114XOrthopaedic Surgery - Adult Reconstructive Orthopaedic Surgery G51596 (California)Secondary
207X00000XOrthopaedic Surgery G51596 (California)Primary

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. Mr John Steven Portwood is NOT enrolled with medicare and thus cannot prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Mr John Steven Portwood, MD
3838 Sherman Dr, Suite 2,
Riverside, CA 92503-4001

Ph: (951) 354-7270
Mr John Steven Portwood, MD
3838 Sherman Dr, Suite 2,
Riverside, CA 92503-4001

Ph: (951) 354-7270

Reviews and Comments


Orthopaedic Surgery Doctors in Riverside, CA

Brian D Hild, MD
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 4444 Magnolia Ave, Riverside, CA 92501
Phone: 951-682-5661    Fax: 951-686-3758
Dr. Ramon Aguilera Grijalva Jr., M.D.
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 10800 Magnolia Ave, Riverside, CA 92505
Phone: 951-353-4000    
Neil J. Halbridge, MD
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 4354 Latham St Ste 100, Riverside, CA 92501
Phone: 951-683-0650    Fax: 951-774-4612
Dr. Chirag Narayan Amin, M.D.
Orthopedic Surgery
Medicare: Medicare Enrolled
Practice Location: 1485 Spruce St, Suite Q, Riverside, CA 92507
Phone: 951-680-0066    Fax: 951-221-4441
Stephen P Suzuki, MD
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 4354 Latham St Ste 100, Riverside, CA 92501
Phone: 951-683-0650    Fax: 951-774-4610
Mr. Thomas Mark Hartley, M.D.
Orthopedic Surgery
Medicare: Not Enrolled in Medicare
Practice Location: 4444 Magnolia Ave, Riverside, CA 92501
Phone: 951-682-5661    Fax: 951-686-3758
Gene Choi, MD
Orthopedic Surgery
Medicare: Accepting Medicare Assignments
Practice Location: 7117 Brockton Ave, Riverside, CA 92506
Phone: 951-782-3764    Fax: 951-784-3262

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).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.