Dr. Brian Lewis Block, MD
- Medicare services, 2024
- 1,008
- Medicare patients, 2024
- 439
- Part D claims, 2024
- 550
- Publications
- 31
- MIPS score, 2024
- 100
- 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
- Get mobile number
Find Dr. Block's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Brian Lewis Block is an internist in San Francisco, California
Dr. Block practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health.
Dr. Block's NPI, 1407114044, was assigned on May 2, 2012. Dr. Block graduated from Harvard Medical School in 2012. Dr. Block's California license number on file is A142233.
- NPI
- 1407114044NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668785809
- NPI enumeration date
- May 2, 2012
- 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
- Male
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Brian Lewis Block practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California
Dr. Block'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.
- UCSF Helen Diller Medical Center at Parnassus Heights505 Parnassus Ave, Box 0296, San Francisco, CA 94143 · San Francisco CountyPhone(415) 353-2733
Source: Dmand AI Affiliation Data
Dr. Brian Lewis Block is affiliated with 4 sites of care and 6 medical groups
Dr. Block's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. Dr. Block is also affiliated with Zuckerberg San Francisco General Hospital and Trauma Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Block to 2 more hospitals and 5 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Brian Lewis Block's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Block practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCSF Helen Diller Medical Center at Parnassus Heights | Available with a free account |
| +3 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brian Lewis Block is one of 16,751 internists in California
Internal medicine is Dr. Block's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Block is board certified in critical care medicine by the American Board of Internal Medicine. Dmand AI has Dr. Block's licenses on file in 2 states: California and New York.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- New York license
Clinical focus
Dmand AI lists asthma, chronic obstructive pulmonary disease (COPD), chronic respiratory failure, chronic sinusitis, lung disease: COPD, asthma or bronchitis, pleural effusion, pneumonia and pulmonary fibrosis among the conditions Dr. Block treats.
Internists near Dr. Block
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. Brian Lewis Block billed Medicare for 1,008 services in 2024
CMS data shows 1,008 Medicare services from Dr. Block across 13 procedure codes in 2024, for 439 Medicare patients. Medicare paid $60,859 for them.
Dr. Block's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4022024: 4245%
- Tests and treatments
- 2023: 5012024: 33932%
- Other services
- 2023: 692024: 232236%
- Surgery
- 2023: 152024: 1313%
Where Dr. Block's Medicare services took place, 2024
- In an office394%
- In a facility96996%
Dr. Block compared with the California median for internists, 2024
- Dr. Block
- California median
- Medicare services
- 1,008vs 3612.8 times
- Medicare patients
- 439vs 1512.9 times
- Part D claims
- 415vs 421Close to median
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Block'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.
Need commercial claims for Dr. Block?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Block and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brian Lewis Block treated 439 Medicare patients in 2024, average age 71
CMS counts 439 Medicare patients who saw Dr. Block in 2024. The largest group is 65 to 74, with 184 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 37% are also on Medicaid. Their average risk score is 2.84, 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. Block's median patient age at 68, with 52% women.
Dr. Block's Medicare patients by age, 2024
Dr. Block's Medicare patients by sex, 2024
- Women21248%
- Men22752%
Chronic conditions among Dr. Block's Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- COPD49%
- Arthritis47%
- Chronic kidney disease43%
- Diabetes39%
- Ischemic heart disease39%
- Heart failure36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Block's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Brian Lewis Block wrote 550 Medicare Part D claims in 2024
In 2024, Dr. Block wrote 550 Medicare Part D claims for 101 patients. CMS names the drug for 415 of them, across 17 drugs with 11 or more claims each, at $259,322 in total drug cost. In 2023, CMS named 222 claims across 13 drugs.
Dr. Block'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. Block's Part D claims, 2024
- Antibiotics5%29 of 550 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: 2222024: 41587%
Drugs named by CMS: 17 in 2024, 13 in 2023.
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. Brian Lewis Block 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. Block for performance year 2024, reported as part of a group. Dr. Block accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Block as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Block'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. Brian Lewis Block has 31 publications on record
Dmand AI links 31 papers to Dr. Block, published from 2008 to 2023. 2008 was the busiest year, with 4. The most frequent topics are HIV-1, HIV Infections and Virus Replication. Dr. Block has published most often in J Virol. Dr. Block's most frequent co-authors are Todd L. Allen, MD, Teva Brender, MD and Lekshmi Santhosh, MD.
Dr. Block's papers by year, 2008 to 2023
Topics Dr. Block writes about most
- HIV-1
- HIV Infections
- Virus Replication
- T-Lymphocytes, Cytotoxic
- COVID-19
- Epitopes, T-Lymphocyte
- Molecular Sequence Data
- RNA, Viral
Dr. Block's most frequent co-authors
- Todd L. Allen, MD6 shared papers
- Teva Brender, MD2 shared papers
- Lekshmi Santhosh, MD2 shared papers
Recent publications by Dr. Block
Intensive Care Med
J Am Geriatr Soc
See who Dr. Block researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Block works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Brian Lewis Block received $67 in industry payments in 2020
CMS Open Payments shows 1 general payment to Dr. Block from 1 drug or device company in 2020. Food and beverage make up the largest share, 100% of the total. United Therapeutics Corporation paid the most, $67.
Companies that paid Dr. Block the most, 2020 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Brian Lewis Block graduated from Harvard Medical School
Dr. Block graduated from Harvard Medical School in 2012.
- Medical school
- Board certified in critical care medicine
- Board certified in internal medicine
- Board certified in pulmonary disease
Source: Dmand AI Professional Profile Data
Dr. Brian Lewis Block accepts plans from 7 insurance carriers
Dr. Block is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
- Molina
Plan types Dr. Block accepts, by number of carriers
- Medicare7
- PPO5
- HMO2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Brian Lewis Block's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors 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-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Brian Lewis Block
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. Brian Lewis Block's NPI number?
Dr. Brian Lewis Block's NPI number is 1407114044. It was assigned on May 2, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian Lewis Block?
Dr. Brian Lewis Block is an internist in San Francisco, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Brian Lewis Block practice?
Dr. Block practices at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143. Dr. Block'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. Block to 2 hospitals and 5 medical groups.
What is Dr. Brian Lewis Block's office phone number?
The practice phone on file for Dr. Block is (415) 353-2733.
What is Dr. Brian Lewis Block's medical license number?
Dr. Block's California license number on file is A142233, one of the licenses on file in 2 states.
Which states has Dr. Brian Lewis Block been licensed in?
Dmand AI has state licenses on file for Dr. Block in California (2016 to 2025) and New York (2013 to 2016).
Which hospitals is Dr. Brian Lewis Block affiliated with?
Dr. Block practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California. Dr. Block is also affiliated with Zuckerberg San Francisco General Hospital and Trauma Center. Dmand AI links Dr. Block to 2 more hospitals.
What medical group is Dr. Brian Lewis Block part of?
Dr. Block is linked to The Permanente Medical Group, Inc. Dmand AI links Dr. Block to 5 more medical groups.
Does Dr. Brian Lewis Block accept Medicare?
Yes. CMS data shows Dr. Block billed Medicare for 1,008 services in 2024, and Dr. Block accepts Medicare assignment.
Does Dr. Brian Lewis Block offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Block as offering telehealth services.
Show 11 more questionsShow fewer questions
What is Dr. Brian Lewis Block's MIPS score?
Dr. Block's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Brian Lewis Block see?
CMS counts 439 Medicare patients who saw Dr. Block in 2024, with an average age of 71.
Is Dr. Brian Lewis Block board certified?
Yes. Dr. Block is board certified in critical care medicine by the American Board of Internal Medicine.
What services does Dr. Brian Lewis Block bill to Medicare?
In 2024, Dr. Block's most billed Medicare services were medicare service (G2211), office visit, established patient (99215) and lung function service (94010).
Where did Dr. Brian Lewis Block go to medical school?
Dr. Block graduated from Harvard Medical School in 2012.
What drugs does Dr. Brian Lewis Block prescribe most?
In 2024 Medicare Part D data, Dr. Block's most prescribed drugs by claims were Albuterol Sulfate Hfa, Stiolto Respimat and Trelegy Ellipta.
Has Dr. Brian Lewis Block received payments from drug or device companies?
CMS Open Payments shows $67 in general payments to Dr. Block from 1 company from 2020 to 2020. The largest total came from United Therapeutics Corporation.
How long has Dr. Brian Lewis Block been practicing?
Dr. Block graduated from medical school in 2012, 14 years ago.
Does Dr. Brian Lewis Block do research?
Dmand AI links 31 publications to Dr. Block, published from 2008 to 2023.
Who does Dr. Brian Lewis Block publish with?
Dr. Block's most frequent co-authors are Todd L. Allen, MD (6 shared papers), Teva Brender, MD (2 shared papers) and Lekshmi Santhosh, MD (2 shared papers).
What insurance does Dr. Brian Lewis Block accept?
Dr. Block is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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