Dr. Karin Gaensler, MD

  • San Francisco, CA
  • Hematology (internal medicine) physician
NPI1609830215PAC ID6800970211
Medicare services, 2024
256
Medicare patients, 2024
72
Part D claims, 2024
208
Publications
33
MIPS score, 2024
100
Practice address
505 Parnassus Ave, Box 0296, San Francisco, CA 94143
Practice phone
Call (415) 353-2733
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

UCSF Helen Diller Medical Center at Parnassus Heights

Hospital · San Francisco, California

See all 8 affiliations

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Dr. Karin Gaensler is a hematology (internal medicine) physician in San Francisco, California

Dr. Gaensler practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health.

Dr. Gaensler's NPI, 1609830215, was assigned on April 12, 2006. Dr. Gaensler graduated from Harvard Medical School in 1981. Dr. Gaensler holds California license G50093.

NPI and contact details
Medicare PAC ID
6800970211
NPI enumeration date
April 12, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(415) 353-2733
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Female
Estimated age
71
Medical school graduation
1981

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Karin Gaensler practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California

Dr. Gaensler's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights, at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143 in San Francisco County. The practice phone is (415) 353-2733.

Source: Dmand AI Affiliation Data

Dr. Karin Gaensler is affiliated with 4 sites of care and 4 medical groups

Dr. Gaensler's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. The medical group on file is UCSF Pediatrics. Dmand AI also links Dr. Gaensler to 3 more group practices and clinics and 3 medical groups, each named with a free account.

See all 8 affiliations for Dr. Gaensler

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Karin Gaensler's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gaensler practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
UCSF Helen Diller Medical Center at Parnassus HeightsAvailable with a free account
+3 more sites and 3 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Karin Gaensler is one of 153 hematology (internal medicine) physicians in California

Internal medicine is Dr. Gaensler's primary specialty in the NPI Registry, under taxonomy code 207RH0000X. The record also lists hematology. Dr. Gaensler is board certified in hematology by the American Board of Internal Medicine. Dr. Gaensler is licensed in California.

Specialties and state licenses

  • Hematology (internal medicine), CaliforniaPrimaryLicense G50093 · 1983 to 2026 · taxonomy 207RH0000X

Clinical focus

Dmand AI lists chronic leukemia, multiple myeloma, neutropenia and prostate cancer among the conditions Dr. Gaensler treats.

Hematology (internal medicine) physicians near Dr. Gaensler

Counts of hematology (internal medicine) physicians with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Karin Gaensler billed Medicare for 256 services in 2024

CMS data shows 256 Medicare services from Dr. Gaensler across 3 procedure codes in 2024, for 72 Medicare patients. Medicare paid $17,704 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024256
Medicare patients72
Paid by Medicare$17,704
Procedure codes3

Dr. Gaensler's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1532024: 11922%
Other services
2023: 02024: 103
Surgery
2023: 222024: 3455%

Dr. Gaensler compared with the California median for hematology (internal medicine) physicians, 2024

  • Dr. Gaensler
  • California median
Medicare services
256vs 37331% below
Medicare patients
72vs 10934% below
Part D claims
96vs 99Close to median

Medians across 139 hematology (internal medicine) physicians in California with Dmand AI profiles that report each measure.

Dr. Gaensler's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Gaensler

Need commercial claims for Dr. Gaensler?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gaensler and other hematology (internal medicine) physicians in California.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Karin Gaensler treated 72 Medicare patients in 2024, average age 72

CMS counts 72 Medicare patients who saw Dr. Gaensler in 2024. The largest group is 65 to 74, with 38 patients. 71% of them have high blood pressure, and 68% have high cholesterol. 25% are also on Medicaid. Their average risk score is 2.92, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Gaensler's median patient age at 65, with 38% women.

Medicare patients, 202472
Average age72
Average risk score2.92
Also on Medicaid25%

Dr. Gaensler's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Gaensler's Medicare patients by sex, 2024

  • Women3244%
  • Men4056%

Chronic conditions among Dr. Gaensler's Medicare patients, 2024

  1. High blood pressure71%
  2. High cholesterol68%
  3. Chronic kidney disease39%
  4. Arthritis38%
  5. Ischemic heart disease32%
  6. Atrial fibrillation26%
  7. Heart failure25%
  8. Mood disorders25%

Share of Medicare patients with each condition. A patient can have several.

Dr. Gaensler's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 65

Patient panel by sex, all payers

  • Women38%
  • Men60%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Karin Gaensler wrote 208 Medicare Part D claims in 2024

In 2024, Dr. Gaensler wrote 208 Medicare Part D claims for 26 patients. 71% of them were for generic drugs. CMS names the drug for 96 of them, across 5 drugs with 11 or more claims each, at $182,705 in total drug cost. In 2023, CMS named 127 claims across 6 drugs.

Part D claims, 2024208
Drugs named by CMS5
Total drug cost$182,705
Part D patients26

Dr. Gaensler's Part D claims by kind of drug, 2024

  • Generic148 claims71%
  • Brand-name60 claims29%

Dr. Gaensler's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Gaensler's Part D claims, 2024

  • Antibiotics13%26 of 208 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1272024: 9624%

Drugs named by CMS: 5 in 2024, 6 in 2023.

See all prescribing by Dr. Gaensler

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Karin Gaensler scored 100 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Gaensler for performance year 2024, reported as part of a group. Dr. Gaensler accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Gaensler as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Gaensler's MIPS scores, performance year 2024

  • 100of 100Final score
  • 95of 100Quality
  • 40of 100Improvement Activities
  • 81of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

For MedTech and pharma teams

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Dr. Karin Gaensler has 33 publications on record

Dmand AI links 33 papers to Dr. Gaensler, published from 2008 to 2023. 2014 was the busiest year, with 4. The most frequent topics are Hematopoietic Stem Cell Transplantation, Gene Expression and Leukemia, Myeloid, Acute. Dr. Gaensler has published most often in Biol Blood Marrow Transplant. Dr. Gaensler's most frequent co-authors are Lloyd Damon, MD, Rebecca L. Olin, MD and Charalambos I. Andreadis, MD.

Papers33
Years published2008 to 2023

Dr. Gaensler's papers by year, 2012 to 2023

Topics Dr. Gaensler writes about most

  • Hematopoietic Stem Cell Transplantation
  • Gene Expression
  • Leukemia, Myeloid, Acute
  • Mice, Inbred C57BL
  • Antineoplastic Agents
  • Cells, Cultured
  • DNA-Binding Proteins
  • Globins

Dr. Gaensler's most frequent co-authors

Recent publications by Dr. Gaensler

See all 33 publications and co-authors

See who Dr. Gaensler researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Gaensler works with, so you can find a warm path to the right hematology (internal medicine) physicians.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Karin Gaensler received $79 in industry payments from 2016 to 2021

CMS Open Payments shows 3 general payments to Dr. Gaensler from 3 drug and device companies from 2016 to 2021. Food and beverage make up the largest share, 100% of the total. Alexion Pharmaceuticals, Inc. paid the most, $40.

General payments to Dr. Gaensler by program year, 2016 to 2021

Companies that paid Dr. Gaensler the most, 2016 to 2021

Share is of all general payments to this clinician.

See all payments to Dr. Gaensler

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Karin Gaensler has 1 award and honors on record

Dmand AI lists 1 award for Dr. Gaensler, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Dr. Gaensler

  1. 2013
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Karin Gaensler graduated from Harvard Medical School

Dr. Gaensler graduated from Harvard Medical School in 1981.

  1. Medical schoolHarvard Medical School
  2. Board certified in hematologyAmerican Board of Internal Medicine
  3. Board certified in internal medicineAmerican Board of Internal Medicine
  4. Board certified in medical oncologyAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Karin Gaensler accepts plans from 8 insurance carriers

Dr. Gaensler is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • HCSC
  • Regence Health Plans
  • Blue Cross and Blue Shield of Kansas City
  • CMS Medicare

Plan types Dr. Gaensler accepts, by number of carriers

  1. Medicare7
  2. PPO6
  3. HMO4
  4. POS4
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Dr. Karin Gaensler's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Karin Gaensler

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Karin Gaensler's NPI number?

Dr. Karin Gaensler's NPI number is 1609830215. It was assigned on April 12, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Karin Gaensler?

Dr. Karin Gaensler is a hematology (internal medicine) physician in San Francisco, California. The primary specialty in the NPI Registry is Hematology (Internal Medicine) Physician (taxonomy code 207RH0000X).

Where does Dr. Karin Gaensler practice?

Dr. Gaensler practices at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143. Dr. Gaensler's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. Dmand AI also links Dr. Gaensler to 3 group practices and clinics and 3 medical groups.

What is Dr. Karin Gaensler's office phone number?

The practice phone on file for Dr. Gaensler is (415) 353-2733.

What is Dr. Karin Gaensler's medical license number?

Dr. Gaensler holds California license G50093.

Which hospitals is Dr. Karin Gaensler affiliated with?

Dr. Gaensler practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California.

What medical group is Dr. Karin Gaensler part of?

Dr. Gaensler is linked to UCSF Pediatrics. Dmand AI links Dr. Gaensler to 3 more medical groups.

Does Dr. Karin Gaensler accept Medicare?

Yes. CMS data shows Dr. Gaensler billed Medicare for 256 services in 2024, and Dr. Gaensler accepts Medicare assignment.

Does Dr. Karin Gaensler offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Gaensler as offering telehealth services.

What is Dr. Karin Gaensler's MIPS score?

Dr. Gaensler's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Karin Gaensler see?

CMS counts 72 Medicare patients who saw Dr. Gaensler in 2024, with an average age of 72.

Is Dr. Karin Gaensler board certified?

Yes. Dr. Gaensler is board certified in hematology by the American Board of Internal Medicine.

What services does Dr. Karin Gaensler bill to Medicare?

In 2024, Dr. Gaensler's most billed Medicare services were office visit, established patient (99215), medicare service (G2211) and surgery: blood and lymph system (38222).

Where did Dr. Karin Gaensler go to medical school?

Dr. Gaensler graduated from Harvard Medical School in 1981.

What drugs does Dr. Karin Gaensler prescribe most?

In 2024 Medicare Part D data, Dr. Gaensler's most prescribed drugs by claims were Acyclovir, Hydroxyurea and Sulfamethoxazole-Trimethoprim.

Has Dr. Karin Gaensler received payments from drug or device companies?

CMS Open Payments shows $79 in general payments to Dr. Gaensler from 3 companies from 2016 to 2021. The largest total came from Alexion Pharmaceuticals, Inc.

How long has Dr. Karin Gaensler been practicing?

Dr. Gaensler graduated from medical school in 1981, 45 years ago.

Does Dr. Karin Gaensler do research?

Dmand AI links 33 publications to Dr. Gaensler, published from 2008 to 2023.

Who does Dr. Karin Gaensler publish with?

Dr. Gaensler's most frequent co-authors are Lloyd Damon, MD (11 shared papers), Rebecca L. Olin, MD (10 shared papers) and Charalambos I. Andreadis, MD (9 shared papers).

What insurance does Dr. Karin Gaensler accept?

Dr. Gaensler is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

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