Dr. Charles Regis Langelier, MD, PhD

  • San Francisco, CA
  • Infectious disease specialist
NPI1275822793PAC ID7012200686
Medicare services, 2024
84
Medicare patients, 2024
50
Part D claims, 2018
14
Publications
125
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 6 affiliations

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Dr. Charles Regis Langelier is an infectious disease specialist in San Francisco, California

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

Dr. Langelier's NPI, 1275822793, was assigned on April 5, 2011. Dr. Langelier graduated from Spencer Fox Eccles School of Medicine in 2011. Dr. Langelier holds California license A124890.

NPI and contact details
Medicare PAC ID
7012200686
NPI enumeration date
April 5, 2011
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
Male
Estimated age
41
Medical school graduation
2011

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

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

Dr. Langelier'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. Charles Regis Langelier is affiliated with 3 sites of care and 3 medical groups

Dr. Langelier'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. Langelier to 2 more group practices and clinics and 2 medical groups, each named with a free account.

See all 6 affiliations for Dr. Langelier

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

Dmand AI tracks the EHR system at Dr. Charles Regis Langelier's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Langelier practices, 3 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
+2 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Charles Regis Langelier is one of 1,054 infectious disease specialists in California

Infectious disease is Dr. Langelier's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Langelier is licensed in California.

Specialties and state licenses

  • Infectious disease, CaliforniaPrimaryLicense A124890 · 2013 to 2026 · taxonomy 207RI0200X

Infectious disease specialists near Dr. Langelier

Counts of infectious disease specialists 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. Charles Regis Langelier billed Medicare for 84 services in 2024

CMS data shows 84 Medicare services from Dr. Langelier across 3 procedure codes in 2024, for 50 Medicare patients. Medicare paid $7,694 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202484
Medicare patients50
Paid by Medicare$7,694
Procedure codes3

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

  • 2023
  • 2024
Office and hospital visits
2023: 282024: 67139%
Other services
2023: 02024: 17

Dr. Langelier compared with the California median for infectious disease specialists, 2024

  • Dr. Langelier
  • California median
Medicare services
84vs 42980% below
Medicare patients
50vs 18072% below
Part D claims
14vs 11988% below

Medians across 930 infectious disease specialists in California with Dmand AI profiles that report each measure.

Dr. Langelier'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. Langelier

Need commercial claims for Dr. Langelier?

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

Dr. Charles Regis Langelier treated 50 Medicare patients in 2024, average age 70

CMS counts 50 Medicare patients who saw Dr. Langelier in 2024. The largest group is 65 to 74, with 22 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 56% are also on Medicaid. Their average risk score is 3.46, 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. Langelier's median patient age at 58, with 46% women.

Medicare patients, 202450
Average age70
Average risk score3.46
Also on Medicaid56%

Dr. Langelier's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Langelier's Medicare patients by sex, 2024

  • Women1938%
  • Men3162%

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

  1. High blood pressure75%
  2. High cholesterol75%
  3. Depression62%
  4. Mood disorders62%
  5. Chronic kidney disease58%
  6. Atrial fibrillation54%
  7. Anxiety50%
  8. Diabetes50%

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

Dr. Langelier's patients across all payers

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

Patient panel by age, all payers

Median age 58

Patient panel by sex, all payers

  • Women46%
  • Men51%

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

Dr. Charles Regis Langelier wrote 14 Medicare Part D claims in 2018

In 2018, Dr. Langelier wrote 14 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $235 in total drug cost. In 2017, CMS named 49 claims across 3 drugs.

Part D claims, 201814
Drugs named by CMS1
Total drug cost$235

Dr. Langelier's most prescribed drugs by claims, 2018

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

Part D claims for drugs CMS names, 2017 to 2018

  • 2017
  • 2018
Claims for drugs CMS names
2017: 492018: 1471%

Drugs named by CMS: 1 in 2018, 3 in 2017.

See all prescribing by Dr. Langelier

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

Dr. Charles Regis Langelier 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. Langelier for performance year 2024, reported as part of a group. Dr. Langelier accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Langelier as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Langelier'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

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Dr. Charles Regis Langelier has 125 publications on record

Dmand AI links 125 papers to Dr. Langelier, published from 2004 to 2025. 2024 was the busiest year, with 23. The most frequent topics are COVID-19, SARS-CoV-2 and Metagenomics. Dr. Langelier has published most often in medRxiv. Dr. Langelier's most frequent co-authors are Carolyn Suzanne Calfee, MD, Carolyn Marie Hendrickson, MD and Peter Michael Mourani, MD.

Papers125
Years published2004 to 2025

Dr. Langelier's papers by year, 2016 to 2025

Topics Dr. Langelier writes about most

  • COVID-19
  • SARS-CoV-2
  • Metagenomics
  • High-Throughput Nucleotide Sequencing
  • Respiratory Tract Infections
  • Critical Illness
  • Lung
  • Microbiota

Dr. Langelier's most frequent co-authors

Recent publications by Dr. Langelier

See all 125 publications and co-authors

See who Dr. Langelier researches with

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

How network discovery works

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

Dr. Charles Regis Langelier received $241 in industry payments in 2016

CMS Open Payments shows 1 general payment to Dr. Langelier from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Illumina, Inc. paid the most, $241.

Companies that paid Dr. Langelier the most, 2016 to 2016

Share is of all general payments to this clinician.

See all payments to Dr. Langelier

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

Dr. Charles Regis Langelier graduated from Spencer Fox Eccles School of Medicine

Dr. Langelier graduated from Spencer Fox Eccles School of Medicine in 2011.

  1. Medical schoolSpencer Fox Eccles School of Medicine

Source: Dmand AI Professional Profile Data

Dr. Charles Regis Langelier accepts plans from 9 insurance carriers

Dr. Langelier is in network with 9 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • Elevance
  • HCSC
  • Regence Health Plans
  • United Healthcare
  • Blue Cross and Blue Shield of Kansas City
  • CMS Medicare
  • +1 more carriersWith a free account

Plan types Dr. Langelier accepts, by number of carriers

  1. Medicare5
  2. PPO5
  3. HMO4
  4. POS4
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Dr. Charles Regis Langelier'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)
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)
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. Charles Regis Langelier

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. Charles Regis Langelier's NPI number?

Dr. Charles Regis Langelier's NPI number is 1275822793. It was assigned on April 5, 2011, and it is active in the NPI Registry.

What kind of doctor is Dr. Charles Regis Langelier?

Dr. Charles Regis Langelier is an infectious disease specialist in San Francisco, California. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).

Where does Dr. Charles Regis Langelier practice?

Dr. Langelier practices at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143. Dr. Langelier'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. Langelier to 2 group practices and clinics and 2 medical groups.

What is Dr. Charles Regis Langelier's office phone number?

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

What is Dr. Charles Regis Langelier's medical license number?

Dr. Langelier holds California license A124890.

Which hospitals is Dr. Charles Regis Langelier affiliated with?

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

What medical group is Dr. Charles Regis Langelier part of?

Dr. Langelier is linked to UCSF Pediatrics. Dmand AI links Dr. Langelier to 2 more medical groups.

Does Dr. Charles Regis Langelier accept Medicare?

Yes. CMS data shows Dr. Langelier billed Medicare for 84 services in 2024, and Dr. Langelier accepts Medicare assignment.

Does Dr. Charles Regis Langelier offer telehealth?

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

What is Dr. Charles Regis Langelier's MIPS score?

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

Show 9 more questionsShow fewer questions

How many Medicare patients does Dr. Charles Regis Langelier see?

CMS counts 50 Medicare patients who saw Dr. Langelier in 2024, with an average age of 70.

What services does Dr. Charles Regis Langelier bill to Medicare?

In 2024, Dr. Langelier's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99222) and medicare service (G0316).

Where did Dr. Charles Regis Langelier go to medical school?

Dr. Langelier graduated from Spencer Fox Eccles School of Medicine in 2011.

What drugs does Dr. Charles Regis Langelier prescribe most?

In 2018 Medicare Part D data, Dr. Langelier's most prescribed drugs by claims were Amoxicillin.

Has Dr. Charles Regis Langelier received payments from drug or device companies?

CMS Open Payments shows $241 in general payments to Dr. Langelier from 1 company from 2016 to 2016. The largest total came from Illumina, Inc.

How long has Dr. Charles Regis Langelier been practicing?

Dr. Langelier graduated from medical school in 2011, 15 years ago.

Does Dr. Charles Regis Langelier do research?

Dmand AI links 125 publications to Dr. Langelier, published from 2004 to 2025.

Who does Dr. Charles Regis Langelier publish with?

Dr. Langelier's most frequent co-authors are Carolyn Suzanne Calfee, MD (40 shared papers), Carolyn Marie Hendrickson, MD (16 shared papers) and Peter Michael Mourani, MD (14 shared papers).

What insurance does Dr. Charles Regis Langelier accept?

Dr. Langelier is in network with 9 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.

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