NPPES file of Aug 9, 2026

Katherine Macauley Ligtenberg Given, MD, PHD

Dermatology Physician · Santa Rosa, CA

Katherine Macauley Ligtenberg Given, MD, PHD is a dermatology physician with a practice address in Santa Rosa, California, and NPI 1124476296, issued on May 31, 2016. Check the license (California A167878, 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
1124476296
Name
Katherine Macauley Ligtenberg Given
Credential
MD, PHD
Primary taxonomy
Dermatology Physician 207N00000X
License numbers
A167878 CA
125068796 IL
Self-reported in NPPES; status is on the state search
Practice location
6574 Oakmont Dr Ste B, Santa Rosa, CA 95409
Phone
(707) 579-4239
Enumerated
May 31, 2016
Record last updated
Aug 5, 2026
Fax
(707) 579-0459
Medicare enrollment
Enrolled (PECOS I20220224001485); accepts Medicare assignment
Medical or professional school
University Of Chicago, Pritzker School Of Medicine, 2016
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 6574 Oakmont Dr Ste B

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

  1. Jeffrey Collins, D.O.Dermatology Physician1174942403
  2. Matthew RichPhysician Assistant1366153645

Verify Katherine Macauley Ligtenberg Given in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A167878
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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81% fewer Medicare Part D claims than the average dermatology physician in 2024

149 Medicare Part D claims for 111 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 12 claims were for opioids.

  1. Katherine Given149
  2. Specialty average797

Most prescribed

  1. Cephalexin94 claims
  2. Doxycycline Hyclate23 claims
  3. Hydrocodone-Acetaminophen11 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: $150.29

2 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Katherine Given$150.29
  2. Specialty average$8,544.61

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 4 group practices

  1. Golden State Dermatology Associates, Inc.Mountain View, CA
  2. Integrated Dermatology OF Santa Rosa PCHealdsburg, CA
  3. Redwood Fam Dermatology Medical Associates - A Medical CorporationSanta Rosa, CA
  4. Zand Dermatology IncMill Valley, CA

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

Katherine Macauley Ligtenberg Given among 2,083 dermatology physician records in California

Katherine Macauley Ligtenberg Given, MD, PHD is one of 2,083 dermatology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 80% of them.

  • NPI issued2016 · 80% of these records are older, 17% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2016 · median 2006 among the 1,450 with a school on file
  • Record last updated2026 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in California

There are 2,083 dermatology physician records in California.

The 8 dermatology physician records with the nearest ZIP codes

  1. Jeffrey Collins, D.O.Santa Rosa, CA 954091174942403
  2. Julie Plante, MDSanta Rosa, CA 954091346426848
  3. Stephen Schwartz, M.D.Santa Rosa, CA 954051326154352
  4. Kenneth Stein, MDSanta Rosa, CA 954051982685798
  5. Dale Westrom, M.D., PH.D.Santa Rosa, CA 954041922032077
  6. Kim Carlson-Sweet, MDSanta Rosa, CA 954031609954106
  7. Henry Degroot, MDSanta Rosa, CA 954031346260411
  8. Audrey Desky, MDSanta Rosa, CA 954031366526352

Common questions

What is Katherine Macauley Ligtenberg Given, MD, PHD's NPI number?

Katherine Macauley Ligtenberg Given, MD, PHD's National Provider Identifier (NPI) is 1124476296, issued on May 31, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Katherine Macauley Ligtenberg Given, MD, PHD located?

The NPPES record lists a practice address at 6574 Oakmont Dr Ste B, Santa Rosa, CA, 95409. Phone: (707) 579-4239. Providers update this record themselves, so call before visiting.

How can I verify Katherine Macauley Ligtenberg Given, MD, PHD's license?

NPPES lists California license number A167878, 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 Katherine Macauley Ligtenberg Given, MD, PHD prescribe under Medicare Part D?

In 2024, Katherine Macauley Ligtenberg Given, MD, PHD had 149 Medicare Part D claims for 111 beneficiaries; the average among dermatology physician prescribers was 797. 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.