NPPES file of Aug 9, 2026

Susan S. Chang, MD

Nephrology Physician · Camarillo, CA

Susan S. Chang, MD is a nephrology physician with a practice address in Camarillo, California, and NPI 1073673273, issued on Dec 11, 2006. Check the license (California A61663, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1073673273
Name
Susan S. Chang
Credential
MD
Primary taxonomy
Nephrology Physician 207RN0300X
License number
A61663 CA
Self-reported in NPPES; status is on the state search
Practice location
2438 N Ponderosa Dr, Camarillo, CA 93010
Phone
(805) 383-9727
Enumerated
Dec 11, 2006
Record last updated
Jul 10, 2023
Fax
(805) 764-1076
Medicaid ID
00A616630 CA
Medicare enrollment
Enrolled (PECOS I20071127000777); accepts Medicare assignment
Medical or professional school
University Of Colorado School Of Medicine, Denver, 1995
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2438 N Ponderosa Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Katie Frederickson, FNP-BCFamily Nurse Practitioner1104237544
  2. Wilson Fung, MDFamily Medicine Physician1942282819
  3. Erin Ghaffari, RDRenal Nutrition Registered Dietitian1982849436
  4. Gerald Karpman, M.D.Dermatology Physician1619905437
  5. Christopher Loh, MDCardiovascular Disease Physician1275641482
  6. John Persons, DDSGeneral Practice Dentistry1467492793

Verify Susan S. Chang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A61663
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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77% more Medicare Part D claims than the average nephrology physician in 2024

2,591 Medicare Part D claims for 307 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.

  1. Susan Chang2,591
  2. Specialty average1,465

Most prescribed

  1. Amlodipine Besylate225 claims
  2. Hydralazine Hcl187 claims
  3. Farxiga156 claims
  4. Sevelamer Carbonate129 claims
  5. Furosemide112 claims
  6. Losartan Potassium102 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: $381.45

12 payments; by number, the most common kind was food and beverage; the largest payer was Merz North America, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Susan Chang$381.45
  2. Specialty average$3,091.37

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

  1. Renal Consultants OF Ventura County IncCamarillo, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Nephrology Physician providers in California

There are 1,468 nephrology physician records in California.

Other nephrology physician records in California

  1. Antoine Abcar, MDLos Angeles, CA1245301159
  2. Basmah Abdalla, M.D.Los Angeles, CA1629394002
  3. Omaran Abdeen, M.D.Mission Hills, CA1700878410
  4. Joseph Abdelmalek, M.DSan Diego, CA1740485531
  5. Lama Abdelnour, MDLos Angeles, CA1477817542
  6. Amir Abdi Pour, MDLoma Linda, CA1912187477
  7. Anas Abou-Ismail, MDPalm Springs, CA1598078784
  8. Graham Abra, M.D.Stanford, CA1760644678
  9. Sreedhar Adapa, M.D.Visalia, CA1881997872
  10. Gbemisola Adenuga, M.D.Los Angeles, CA1952464661

Common questions

What is Susan S. Chang, MD's NPI number?

Susan S. Chang, MD's National Provider Identifier (NPI) is 1073673273, issued on Dec 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Susan S. Chang, MD located?

The NPPES record lists a practice address at 2438 N Ponderosa Dr, Camarillo, CA, 93010. Phone: (805) 383-9727. Providers update this record themselves, so call before visiting.

How can I verify Susan S. Chang, MD's license?

NPPES lists California license number A61663, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Susan S. Chang, MD prescribe under Medicare Part D?

In 2024, Susan S. Chang, MD had 2,591 Medicare Part D claims for 307 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.