Dr. Ida Sim, MD

  • San Francisco, CA
  • Internist
NPI1770547721PAC ID6002990611
Medicare services, 2024
285
Medicare patients, 2024
69
Part D claims, 2024
1,283
Publications
112
Clinical trials
1
Practice address
505 Parnassus Ave, Box 0296, San Francisco, CA 94143
Practice phone
Call (415) 353-2733
Professional email
Get professional email
Personal email
Get personal email
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. Ida Sim is an internist in San Francisco, California

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

Dr. Sim's NPI, 1770547721, was assigned on April 14, 2006. Dr. Sim graduated from Stanford University School Of Medicine in 1990. Dr. Sim holds California license G76458.

NPI and contact details
Medicare PAC ID
6002990611
NPI enumeration date
April 14, 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
Get number
Sex
Female
Estimated age
62
Medical school graduation
1990

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

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

Dr. Sim'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. Ida Sim is affiliated with 4 sites of care and 4 medical groups

Dr. Sim'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. Sim to 3 more group practices and clinics and 3 medical groups, each named with a free account.

See all 8 affiliations for Dr. Sim

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

Dmand AI tracks the EHR system at Dr. Ida Sim's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sim 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

For health IT teams

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Dr. Ida Sim is one of 16,751 internists in California

Internal medicine is Dr. Sim's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Sim is board certified in internal medicine by the American Board of Internal Medicine. Dr. Sim is licensed in California.

Specialties and state licenses

  • Internal medicine, CaliforniaPrimaryLicense G76458 · 1993 to 2027 · taxonomy 207R00000X

Clinical focus

Dmand AI lists aortic atherosclerois, asthma, carpal tunnel syndrome, chronic diabetes, chronic hypertension, chronic obstructive pulmonary disease (COPD), coronary artery disease and depression among the conditions Dr. Sim treats.

Internists near Dr. Sim

Counts of internists 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. Ida Sim billed Medicare for 285 services in 2024

CMS data shows 285 Medicare services from Dr. Sim across 4 procedure codes in 2024, for 69 Medicare patients. Medicare paid $13,777 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 2024285
Medicare patients69
Paid by Medicare$13,777
Procedure codes4

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

  • 2023
  • 2024
Other services
2023: 02024: 143
Office and hospital visits
2023: 1682024: 14215%

Dr. Sim compared with the California median for internists, 2024

  • Dr. Sim
  • California median
Medicare services
285vs 36121% below
Medicare patients
69vs 15154% below
Part D claims
811vs 42193% above

Medians across 15,815 internists in California with Dmand AI profiles that report each measure.

Dr. Sim'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. Sim

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

Dr. Ida Sim treated 69 Medicare patients in 2024, average age 81

CMS counts 69 Medicare patients who saw Dr. Sim in 2024. The largest group is 85 and over, with 27 patients. 75% of them have high blood pressure, and 67% have high cholesterol. 55% are also on Medicaid. Their average risk score is 1.36, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Sim's median patient age at 74, with 65% women.

Medicare patients, 202469
Average age81
Average risk score1.36
Also on Medicaid55%

Dr. Sim's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Sim's Medicare patients by sex, 2024

  • Women4261%
  • Men2739%

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

  1. High blood pressure75%
  2. High cholesterol67%
  3. Diabetes39%
  4. Arthritis32%
  5. Chronic kidney disease32%
  6. Depression28%
  7. Mood disorders28%
  8. Heart failure23%

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

Dr. Sim's patients across all payers

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

Patient panel by age, all payers

Median age 74

Patient panel by sex, all payers

  • Women65%
  • Men34%

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

Dr. Ida Sim wrote 1,283 Medicare Part D claims in 2024

In 2024, Dr. Sim wrote 1,283 Medicare Part D claims for 94 patients. 83% of them were for generic drugs. CMS names the drug for 811 of them, across 36 drugs with 11 or more claims each, at $86,307 in total drug cost. In 2023, CMS named 919 claims across 40 drugs.

Part D claims, 20241,283
Drugs named by CMS36
Total drug cost$86,307
Part D patients94

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

  • Generic1,066 claims83%
  • Brand-name205 claims16%
  • Other12 claims1%

Dr. Sim'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. Sim's Part D claims, 2024

  • Opioids3%41 of 1,283 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: 9192024: 81112%

Drugs named by CMS: 36 in 2024, 40 in 2023.

See all prescribing by Dr. Sim

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. Ida Sim scored 85 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Sim for performance year 2024, reported as part of a group. Dr. Sim accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Sim as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Sim's MIPS scores, performance year 2024

  • 85of 100Final score
  • 81.1of 100Quality
  • 40of 100Improvement Activities
  • 71of 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

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Dr. Ida Sim has 112 publications on record

Dmand AI links 112 papers to Dr. Sim, published from 2004 to 2025. 2021 was the busiest year, with 12. The most frequent topics are Randomized Controlled Trials as Topic, Biomedical Research and Research Design. Dr. Sim has published most often in AMIA Annu Symp Proc. Dr. Sim's most frequent co-authors are Mark Richard Cullen, MD, Richard L. Kravitz, MD and Scott Ryan Bauer, MD.

Papers112
Years published2004 to 2025

Dr. Sim's papers by year, 2015 to 2025

Topics Dr. Sim writes about most

  • Randomized Controlled Trials as Topic
  • Biomedical Research
  • Research Design
  • Information Storage and Retrieval
  • Evidence-Based Medicine
  • Information Dissemination
  • Medical Records Systems, Computerized
  • Publishing

Dr. Sim's most frequent co-authors

Recent publications by Dr. Sim

See all 112 publications and co-authors

See who Dr. Sim researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Sim works with, so you can find a warm path to the right internists.

How network discovery works

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

Dr. Ida Sim has worked on 1 clinical trial

Dmand AI links Dr. Sim to 1 clinical trial. Conditions studied include Agnosia and Perceptual Disorders.

Conditions in Dr. Sim's trials

  • Agnosia
  • Perceptual Disorders

Investigators on the most trials with Dr. Sim

Recent clinical trials with Dr. Sim

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Ida Sim received $1,575 in industry payments from 2018 to 2021

CMS Open Payments shows 3 general payments to Dr. Sim from 2 drug and device companies from 2018 to 2021. Consulting fees make up the largest share, 90% of the total. Myovant Sciences Inc. paid the most, $1,425.

General payments to Dr. Sim by program year, 2018 to 2021

General payments to Dr. Sim by kind, 2018 to 2021

$1.6Kin total
  • Consulting fees$1,42590%
  • Food and beverage$15010%

Companies that paid Dr. Sim the most, 2018 to 2021

Share is of all general payments to this clinician.

See all payments to Dr. Sim

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

Dr. Ida Sim has 2 awards and honors on record

Dmand AI lists 2 awards for Dr. Sim, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Dr. Sim

  1. 2013
    • CMS Stage 1 EHR
  2. 2010
    • ASCI Member

Source: Dmand AI Professional Profile Data

Dr. Ida Sim graduated from Stanford University School Of Medicine

Dr. Sim graduated from Stanford University School Of Medicine in 1990.

  1. Medical schoolStanford University School Of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Ida Sim accepts plans from 10 insurance carriers

Dr. Sim is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Elevance
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Regence Health Plans
  • Blue Cross and Blue Shield of Kansas City
  • +2 more carriersWith a free account

Plan types Dr. Sim accepts, by number of carriers

  1. Medicare8
  2. PPO6
  3. HMO4
  4. POS4
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Dr. Ida Sim'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
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
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. Ida Sim

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. Ida Sim's NPI number?

Dr. Ida Sim's NPI number is 1770547721. It was assigned on April 14, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Ida Sim?

Dr. Ida Sim is an internist in San Francisco, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Ida Sim practice?

Dr. Sim practices at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143. Dr. Sim'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. Sim to 3 group practices and clinics and 3 medical groups.

What is Dr. Ida Sim's office phone number?

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

What is Dr. Ida Sim's medical license number?

Dr. Sim holds California license G76458.

Which hospitals is Dr. Ida Sim affiliated with?

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

What medical group is Dr. Ida Sim part of?

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

Does Dr. Ida Sim accept Medicare?

Yes. CMS data shows Dr. Sim billed Medicare for 285 services in 2024, and Dr. Sim accepts Medicare assignment.

Does Dr. Ida Sim offer telehealth?

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

What is Dr. Ida Sim's MIPS score?

Dr. Sim's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Ida Sim see?

CMS counts 69 Medicare patients who saw Dr. Sim in 2024, with an average age of 81.

Is Dr. Ida Sim board certified?

Yes. Dr. Sim is board certified in internal medicine by the American Board of Internal Medicine.

What services does Dr. Ida Sim bill to Medicare?

In 2024, Dr. Sim's most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and office visit, established patient (99215).

Where did Dr. Ida Sim go to medical school?

Dr. Sim graduated from Stanford University School Of Medicine in 1990.

What drugs does Dr. Ida Sim prescribe most?

In 2024 Medicare Part D data, Dr. Sim's most prescribed drugs by claims were Atorvastatin Calcium, Metformin HCl and Benazepril HCl.

Has Dr. Ida Sim received payments from drug or device companies?

CMS Open Payments shows $1,575 in general payments to Dr. Sim from 2 companies from 2018 to 2021. The largest total came from Myovant Sciences Inc.

How long has Dr. Ida Sim been practicing?

Dr. Sim graduated from medical school in 1990, 36 years ago.

Does Dr. Ida Sim do research?

Dmand AI links 112 publications to Dr. Sim, published from 2004 to 2025. Dr. Sim has worked on 1 clinical trial.

Who does Dr. Ida Sim publish with?

Dr. Sim's most frequent co-authors are Mark Richard Cullen, MD (6 shared papers), Richard L. Kravitz, MD (6 shared papers) and Scott Ryan Bauer, MD (5 shared papers).

What insurance does Dr. Ida Sim accept?

Dr. Sim is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

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