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Dr. Alex S. Metzger, MD
NPI1821070590PAC ID0749207652
- Medicare services, 2024
- 35,162
- Medicare patients, 2024
- 481
- Part D claims, 2024
- 1,361
- Publications
- 2
- Hospital affiliations
- 4
- Practice address
- 1350 S Eliseo Dr, Greenbrae, CA 94904
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Marin Cancer Care - HOPD
Acute Care Hospital outpatient department · Greenbrae, California
Find Dr. Metzger'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. Alex S. Metzger is a hematologist and oncologist in Greenbrae, California
Dr. Metzger practices at Marin Cancer Care - HOPD in Greenbrae, California.
Dr. Metzger's NPI, 1821070590, was assigned on November 17, 2005. Dr. Metzger graduated from Sidney Kimmel Medical College in 2000. Dr. Metzger holds California license A79556.
NPI and contact details
- NPI
- 1821070590NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749207652
- NPI enumeration date
- November 17, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alex S. Metzger practices at Marin Cancer Care - HOPD in Greenbrae, California
Dr. Metzger's primary practice is Marin Cancer Care - HOPD, at 1350 S Eliseo Dr, Greenbrae, CA 94904.
- Marin Cancer Care - HOPD1350 S Eliseo Dr, Greenbrae, CA 94904
Source: Dmand AI Affiliation Data
Dr. Alex S. Metzger is affiliated with 6 sites of care and 1 medical group
Dr. Metzger's primary practice is Marin Cancer Care - HOPD in Greenbrae, California. Dr. Metzger is also affiliated with MarinHealth Medical Center. The medical group on file is Marin Cancer Care. Dmand AI also links Dr. Metzger to 3 more hospitals and 1 group practice or clinic, each named with a free account. Dr. Metzger's employer is on file too: a hospital.
Marin Cancer Care - HOPDPrimary
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Alex S. Metzger's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Metzger practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Marin Cancer Care - HOPD | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Alex S. Metzger is one of 1,502 hematologists and oncologists in California
Hematology and oncology is Dr. Metzger's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Metzger is board certified in hematology by the American Board of Internal Medicine. Dr. Metzger is licensed in California.
Specialties and state licenses
- Hematology and oncology, CaliforniaPrimary
Clinical focus
Dmand AI lists chronic anemia, chronic embolism thrombosis, chronic leukemia, colorectal cancer, deep vein thrombosis (DVT), immune deficiency disease, lung cancer and lymphoma among the conditions Dr. Metzger treats.
Hematologists and oncologists near Dr. Metzger
Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.
1,502hematologists and oncologists in California
3hematologists and oncologists in Greenbrae
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Alex S. Metzger billed Medicare for 35,162 services in 2024
CMS data shows 35,162 Medicare services from Dr. Metzger across 27 procedure codes in 2024, for 481 Medicare patients. Medicare paid $547,938 for them.
Medicare services, 202435,162
Medicare patients481
Paid by Medicare$547,938
Procedure codes27
Dr. Metzger's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 02024: 19,574
- Drugs given in the office
- 2023: 13,2932024: 12,5785%
- Tests and treatments
- 2023: 1,8022024: 1,7622%
- Office and hospital visits
- 2023: 1,1902024: 1,2485%
Where Dr. Metzger's Medicare services took place, 2024
- In an office35,091100%
- In a facility710%
Dr. Metzger compared with the California median for hematologists and oncologists, 2024
- Dr. Metzger
- California median
- Medicare services
- 35,162vs 93237.7 times
- Medicare patients
- 481vs 2252.1 times
- Part D claims
- 1,225vs 3943.1 times
Medians across 1,367 hematologists and oncologists in California with Dmand AI profiles that report each measure.
Dr. Metzger'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Metzger and other hematologists and oncologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alex S. Metzger treated 481 Medicare patients in 2024, average age 78
CMS counts 481 Medicare patients who saw Dr. Metzger in 2024. The largest group is 75 to 84, with 228 patients. 74% of them have high blood pressure, and 74% have high cholesterol. 11% are also on Medicaid. Their average risk score is 1.83, 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. Metzger's median patient age at 76, with 39% women.
Medicare patients, 2024481
Average age78
Average risk score1.83
Also on Medicaid11%
Dr. Metzger's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Metzger's Medicare patients by sex, 2024
- Women15131%
- Men33069%
Chronic conditions among Dr. Metzger's Medicare patients, 2024
- High blood pressure74%
- High cholesterol74%
- Cancer52%
- Arthritis41%
- Ischemic heart disease32%
- Chronic kidney disease27%
- Atrial fibrillation26%
- Anxiety22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Metzger's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women39%
- Men59%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alex S. Metzger wrote 1,361 Medicare Part D claims in 2024
In 2024, Dr. Metzger wrote 1,361 Medicare Part D claims for 184 patients. 75% of them were for generic drugs. CMS names the drug for 1,225 of them, across 29 drugs with 11 or more claims each, at $2,985,179 in total drug cost. In 2023, CMS named 1,302 claims across 22 drugs.
Part D claims, 20241,361
Drugs named by CMS29
Total drug cost$3M
Part D patients184
Dr. Metzger's Part D claims by kind of drug, 2024
- Generic1,019 claims75%
- Brand-name342 claims25%
Dr. Metzger'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. Metzger's Part D claims, 2024
- Opioids2%32 of 1,361 claims
- Antibiotics4%55 of 1,361 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: 1,3022024: 1,2256%
Drugs named by CMS: 29 in 2024, 22 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. Alex S. Metzger scored 0 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 0 out of 100 for Dr. Metzger for performance year 2024, reported individually. Dr. Metzger accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Metzger as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Metzger's MIPS scores, performance year 2024
- 0of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 0of 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. Alex S. Metzger has 2 publications on record
Dmand AI links 2 papers to Dr. Metzger. Dr. Metzger's most frequent co-authors are Primo Nery Lara, MD and Derick Hon Man Lau, MD, PhD.
Papers2
Dr. Metzger's most frequent co-authors
Recent publications by Dr. Metzger
See who Dr. Metzger researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Metzger works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Alex S. Metzger received $636 in industry payments from 2016 to 2025
CMS Open Payments shows 35 general payments to Dr. Metzger from 8 drug and device companies from 2016 to 2025. Education make up the largest share, 65% of the total. Pfizer Inc. paid the most, $403.
General payments to Dr. Metzger by program year, 2016 to 2025
General payments to Dr. Metzger by kind, 2016 to 2025
$636in total
- Education$41565%
- Food and beverage$22135%
Companies that paid Dr. Metzger the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alex S. Metzger has 1 award and honors on record
Dmand AI lists 1 award for Dr. Metzger, most recently CMS Stage 1 EHR in 2014.
Awards and honors for Dr. Metzger
- 2014
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Alex S. Metzger graduated from Sidney Kimmel Medical College
Dr. Metzger graduated from Sidney Kimmel Medical College in 2000.
- Medical school
- Board certified in hematology
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Alex S. Metzger accepts plans from 10 insurance carriers
Dr. Metzger is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- United Healthcare
- 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. Metzger accepts, by number of carriers
- Medicare8
- PPO7
- HMO5
- POS4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Alex S. Metzger'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 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Alex S. Metzger
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. Alex S. Metzger's NPI number?
Dr. Alex S. Metzger's NPI number is 1821070590. It was assigned on November 17, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Alex S. Metzger?
Dr. Alex S. Metzger is a hematologist and oncologist in Greenbrae, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Alex S. Metzger practice?
Dr. Metzger practices at 1350 S Eliseo Dr, Greenbrae, CA 94904. Dr. Metzger's primary practice is Marin Cancer Care - HOPD in Greenbrae, California. Dmand AI also links Dr. Metzger to 3 hospitals and 1 group practice or clinic.
What is Dr. Alex S. Metzger's medical license number?
Dr. Metzger holds California license A79556.
Which hospitals is Dr. Alex S. Metzger affiliated with?
Dr. Metzger is affiliated with MarinHealth Medical Center. Dmand AI links Dr. Metzger to 3 more hospitals.
What medical group is Dr. Alex S. Metzger part of?
Dr. Metzger is linked to Marin Cancer Care.
Does Dr. Alex S. Metzger accept Medicare?
Yes. CMS data shows Dr. Metzger billed Medicare for 35,162 services in 2024, and Dr. Metzger accepts Medicare assignment.
Does Dr. Alex S. Metzger offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Metzger as offering telehealth services.
What is Dr. Alex S. Metzger's MIPS score?
Dr. Metzger's MIPS final score for performance year 2024 is 0 out of 100, reported individually.
How many Medicare patients does Dr. Alex S. Metzger see?
CMS counts 481 Medicare patients who saw Dr. Metzger in 2024, with an average age of 78.
Show 9 more questionsShow fewer questions
Is Dr. Alex S. Metzger board certified?
Yes. Dr. Metzger is board certified in hematology by the American Board of Internal Medicine.
What services does Dr. Alex S. Metzger bill to Medicare?
In 2024, Dr. Metzger's most billed Medicare services were medicare temporary code (Q0138), injected or infused drug (J0897) and medicare temporary code (Q5106).
Where did Dr. Alex S. Metzger go to medical school?
Dr. Metzger graduated from Sidney Kimmel Medical College in 2000.
What drugs does Dr. Alex S. Metzger prescribe most?
In 2024 Medicare Part D data, Dr. Metzger's most prescribed drugs by claims were Prednisone, Abiraterone Acetate and Acyclovir.
Has Dr. Alex S. Metzger received payments from drug or device companies?
CMS Open Payments shows $636 in general payments to Dr. Metzger from 8 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. Alex S. Metzger been practicing?
Dr. Metzger graduated from medical school in 2000, 26 years ago.
Does Dr. Alex S. Metzger do research?
Dmand AI links 2 publications to Dr. Metzger.
Who does Dr. Alex S. Metzger publish with?
Dr. Metzger's most frequent co-authors are Primo Nery Lara, MD (1 shared paper) and Derick Hon Man Lau, MD, PhD (1 shared paper).
What insurance does Dr. Alex S. Metzger accept?
Dr. Metzger is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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