Dr. Alexander Hyunjoon Song, MD
- Medicare services, 2024
- 468
- Medicare patients, 2024
- 116
- Part D claims, 2024
- 151
- MIPS score, 2024
- 89
- Hospital affiliations
- 2
- Practice address
- 300 Pasteur Drive, Stanford, CA 94305
- Practice phone
- Call (650) 723-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Song's professional email, personal email and mobile number
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Dr. Alexander Hyunjoon Song is an internist in Stanford, California
Dr. Song practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.
Dr. Song's NPI, 1770042509, was assigned on March 19, 2019. Dr. Song holds California license A179308.
- NPI
- 1770042509NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779964259
- NPI enumeration date
- March 19, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 723-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alexander Hyunjoon Song practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California
Dr. Song's primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.
- Stanford Hospital at 300 Pasteur Drive300 Pasteur Drive, Stanford, CA 94305 · Santa Clara CountyPhone(650) 723-4000
Source: Dmand AI Affiliation Data
Dr. Alexander Hyunjoon Song is affiliated with 2 sites of care and 3 medical groups
Dr. Song's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Song to 1 more hospital and 2 medical groups, each named with a free account. Dr. Song's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alexander Hyunjoon Song's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Song practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Stanford Hospital at 300 Pasteur Drive | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexander Hyunjoon Song is one of 16,751 internists in California
Internal medicine is Dr. Song's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Song is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Song
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. Alexander Hyunjoon Song billed Medicare for 468 services in 2024
CMS data shows 468 Medicare services from Dr. Song across 3 procedure codes in 2024, for 116 Medicare patients. Medicare paid $52,272 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Song's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2122024: 468121%
Dr. Song compared with the California median for internists, 2024
- Dr. Song
- California median
- Medicare services
- 468vs 36130% above
- Medicare patients
- 116vs 15123% below
- Part D claims
- 11vs 42197% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Song'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alexander Hyunjoon Song treated 116 Medicare patients in 2024, average age 74
CMS counts 116 Medicare patients who saw Dr. Song in 2024. The largest group is 75 to 84, with 46 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 32% are also on Medicaid. Their average risk score is 3.04, 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. Song's median patient age at 65, with 44% women.
Dr. Song's Medicare patients by age, 2024
Dr. Song's Medicare patients by sex, 2024
- Women4841%
- Men6859%
Chronic conditions among Dr. Song's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Cancer54%
- Chronic kidney disease45%
- Diabetes38%
- Ischemic heart disease37%
- Arthritis36%
- Atrial fibrillation35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Song'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
- Women44%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alexander Hyunjoon Song wrote 151 Medicare Part D claims in 2024
In 2024, Dr. Song wrote 151 Medicare Part D claims for 58 patients. 90% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $84 in total drug cost. In 2022, CMS named 81 claims across 5 drugs.
Dr. Song's Part D claims by kind of drug, 2024
- Generic136 claims90%
- Brand-name15 claims10%
Dr. Song'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. Song's Part D claims, 2024
- Opioids9%14 of 151 claims
- Antibiotics21%31 of 151 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, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 812024: 1186%
Drugs named by CMS: 1 in 2024, 5 in 2022.
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. Alexander Hyunjoon Song scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Song for performance year 2024, reported as part of a group. Dr. Song accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Song's MIPS scores, performance year 2024
- 89of 100Final score
- 87.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 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. Alexander Hyunjoon Song received $350 in industry payments from 2022 to 2025
CMS Open Payments shows 12 general payments to Dr. Song from 6 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 71% of the total. Seagen Inc. paid the most, $116.
General payments to Dr. Song by program year, 2022 to 2025
General payments to Dr. Song by kind, 2022 to 2025
- Food and beverage$25071%
- Education$10029%
Companies that paid Dr. Song the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Alexander Hyunjoon Song'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Alexander Hyunjoon Song
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. Alexander Hyunjoon Song's NPI number?
Dr. Alexander Hyunjoon Song's NPI number is 1770042509. It was assigned on March 19, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexander Hyunjoon Song?
Dr. Alexander Hyunjoon Song is an internist in Stanford, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Alexander Hyunjoon Song practice?
Dr. Song practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Song's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Song to 1 hospital and 2 medical groups.
What is Dr. Alexander Hyunjoon Song's office phone number?
The practice phone on file for Dr. Song is (650) 723-4000.
What is Dr. Alexander Hyunjoon Song's medical license number?
Dr. Song holds California license A179308.
Which hospitals is Dr. Alexander Hyunjoon Song affiliated with?
Dr. Song practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dmand AI links Dr. Song to 1 more hospital.
What medical group is Dr. Alexander Hyunjoon Song part of?
Dr. Song is linked to Stanford Health Care. Dmand AI links Dr. Song to 2 more medical groups.
Does Dr. Alexander Hyunjoon Song accept Medicare?
Yes. CMS data shows Dr. Song billed Medicare for 468 services in 2024, and Dr. Song accepts Medicare assignment.
What is Dr. Alexander Hyunjoon Song's MIPS score?
Dr. Song's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
How many Medicare patients does Dr. Alexander Hyunjoon Song see?
CMS counts 116 Medicare patients who saw Dr. Song in 2024, with an average age of 74.
Show 4 more questionsShow fewer questions
What services does Dr. Alexander Hyunjoon Song bill to Medicare?
In 2024, Dr. Song's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99223).
What drugs does Dr. Alexander Hyunjoon Song prescribe most?
In 2024 Medicare Part D data, Dr. Song's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Alexander Hyunjoon Song received payments from drug or device companies?
CMS Open Payments shows $350 in general payments to Dr. Song from 6 companies from 2022 to 2025. The largest total came from Seagen Inc.
How long has Dr. Alexander Hyunjoon Song been practicing?
Dr. Song graduated from medical school in 2019, 7 years ago.
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