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RONALD SWERDLOFF M.D.
NPI 1104935253
Internal Medicine - Endocrinology, Diabetes & Metabolism in Torrance, CA

Active since August 30, 2006PECOS EnrolledAccepts Medicare Assignment
21840 NORMANDIE AVE, STE. 700, TORRANCE, CA 90502(310) 222-5101(310) 320-5463 Get Directions Write a Review

NPPES record last updated: December 3, 2008. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Ronald Swerdloff M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RONALD SWERDLOFF M.D. (NPI 1104935253) is an individual endocrinology, diabetes & metabolism provider in Torrance, California, licensed in California (A20917) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (1962).

NPPES Registry Identity

NPI1104935253
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameRONALD SWERDLOFFCredential: M.D.
Location Address21840 NORMANDIE AVE, STE. 700Torrance, CA 90502-2047
Mailing Address21840 Normandie Ave, Ste. 700Torrance, CA 90502-2047 · (310) 222-5101 · Fax (310) 320-5463
Phone(310) 222-5101
Fax(310) 320-5463
Sole ProprietorNo
Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 1962
Enumeration DateAugust 30, 2006
Last NPPES UpdateDecember 3, 2008
✔ NPI 1104935253 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · A20917
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
21840 NORMANDIE AVE, Torrance, CA 90502
Open in Google Maps ↗

Other Identifiers 9

OtherCH1382CA · Rrm
OtherW14940CA · Group
Medicare UPINA22380CA
Medicaid00A209170CA
Medicare PINWA20917ECA
OtherDA6447CA · Rrm
Medicare PINWA20917DCA
Medicare PINWA20917CCA
OtherM050376CA · Group

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ronald Swerdloff M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8426245226
PECOS Enrollment IDI20101206000923
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90502 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KATAYOUN K MOSTAFAIE M.D.
General Practice
21840 NORMANDIE AVE, STE. 700
TORRANCE, CA 90502
Los Angeles County (310) 222-5101
ANDREW G GIANOUKAKIS M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
21840 NORMANDIE AVE, STE. 700
TORRANCE, CA 90502
Los Angeles County (310) 222-5183
KATHY E SIETSEMA M.D.
Internal Medicine (Pulmonary Disease)
21840 NORMANDIE AVE
TORRANCE, CA 90502
Los Angeles County (310) 222-5101
MARK T. MUNEKATA M.D.
General Practice
21840 NORMANDIE AVE, STE. 700
TORRANCE, CA 90502
Los Angeles County (310) 222-5101
JOEL D. KOPPLE M.D.
Internal Medicine (Nephrology)
21840 NORMANDIE AVE, STE. 700
TORRANCE, CA 90502
Los Angeles County (310) 222-5101
NEDILJKA BULJUBASIC M.D.
Internal Medicine (Cardiovascular Disease)
21840 NORMANDIE AVE, STE. 700
TORRANCE, CA 90502
Los Angeles County (310) 222-5101
CATHERINE S MAO M.D.
Pediatrics (Pediatric Endocrinology)
21840 NORMANDIE AVE, STE. 1100
TORRANCE, CA 90502
Los Angeles County (310) 222-5133
JOHN W TSUANG M.D.
Psychiatry & Neurology (Psychiatry)
21840 NORMANDIE AVE, STE. 200
TORRANCE, CA 90502
Los Angeles County (310) 222-3101

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ronald Swerdloff's NPI number?

The NPI number for Ronald Swerdloff is 1104935253. It was assigned to this individual provider in the NPPES registry on August 30, 2006.

Where is Ronald Swerdloff located?

Ronald Swerdloff practices at 21840 Normandie Ave Ste. 700, Torrance, CA 90502. The listed phone number is (310) 222-5101.

What is Ronald Swerdloff's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Ronald Swerdloff enrolled in Medicare?

Yes. Ronald Swerdloff is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Ronald Swerdloff was last updated on December 3, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.