Dr. Juan C. Asenjo, MD

  • Oakland, CA
  • Hospitalist
NPI1609954486PAC ID3870494412
Medicare services, 2024
84
Medicare patients, 2024
49
Part D claims, 2024
329
Clinical trials
2
Hospital affiliations
1
Practice address
380 West MacArthur Boulevard, Oakland, CA 94609
Practice phone
Call (510) 251-0121
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Addiction Medicine & Recovery Services at Oakland Medical Center

Outpatient Addiction Treatment · Oakland, California

See all 3 affiliations

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Dr. Juan C. Asenjo is a hospitalist in Oakland, California

Dr. Asenjo practices at Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California.

Dr. Asenjo's NPI, 1609954486, was assigned on November 1, 2006. Dr. Asenjo graduated from UC Davis School of Medicine in 2000. Dr. Asenjo's California license number on file is A77526.

NPI and contact details
Medicare PAC ID
3870494412
NPI enumeration date
November 1, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(510) 251-0121
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. Juan C. Asenjo practices at Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California

Dr. Asenjo's primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center, at 380 West MacArthur Boulevard, Oakland, CA 94609. The practice phone is (510) 251-0121.

  • Addiction Medicine & Recovery Services at Oakland Medical Center
    380 West MacArthur Boulevard, Oakland, CA 94609Phone(510) 251-0121

Source: Dmand AI Affiliation Data

Dr. Juan C. Asenjo is affiliated with 2 sites of care and 1 medical group

Dr. Asenjo's primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California. Dr. Asenjo is also affiliated with Oakland Medical Center. The medical group on file is The Permanente Medical Group, Inc.

Addiction Medicine & Recovery Services at Oakland Medical CenterOutpatient Addiction Treatment · Oakland, CaliforniaPrimary
Oakland Medical CenterAcute care hospital, Oakland, CAThe Permanente Medical Group, Inc.Primary care group, Pleasanton, CAParent health systemName with a free account
See all 3 affiliations for Dr. Asenjo

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

Dmand AI tracks the EHR system at Dr. Juan C. Asenjo's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Asenjo practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Addiction Medicine & Recovery Services at Oakland Medical CenterAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Juan C. Asenjo is one of 3,186 hospitalists in California

Hospitalist is Dr. Asenjo's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Asenjo is board certified in internal medicine by the American Board of Internal Medicine. Dr. Asenjo has a license on file in California.

Specialties and state licenses

  • Hospitalist, CaliforniaPrimaryLicense A77526 · 2002 to 2025 · taxonomy 208M00000X

Clinical focus

Dmand AI lists anemia, gastrointestinal inflammation, heart attack, sepsis, stroke and urinary tract infection among the conditions Dr. Asenjo treats.

Hospitalists near Dr. Asenjo

Counts of hospitalists 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. Juan C. Asenjo billed Medicare for 84 services in 2024

CMS data shows 84 Medicare services from Dr. Asenjo across 3 procedure codes in 2024, for 49 Medicare patients. Medicare paid $6,497 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202484
Medicare patients49
Paid by Medicare$6,497
Procedure codes3

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

  • 2023
  • 2024
Office and hospital visits
2023: 472024: 8479%

Dr. Asenjo compared with the California median for hospitalists, 2024

  • Dr. Asenjo
  • California median
Medicare services
84vs 43080% below
Medicare patients
49vs 20176% below
Part D claims
129vs 6987% above

Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.

Dr. Asenjo'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. Asenjo

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

Dr. Juan C. Asenjo treated 49 Medicare patients in 2024, average age 72

CMS counts 49 Medicare patients who saw Dr. Asenjo in 2024. The largest group is 65 to 74, with 20 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 67% are also on Medicaid. Their average risk score is 2.94, 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. Asenjo's median patient age at 67, with 54% women.

Medicare patients, 202449
Average age72
Average risk score2.94
Also on Medicaid67%

Dr. Asenjo's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Asenjo's Medicare patients by sex, 2024

  • Women2347%
  • Men2653%

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

  1. High blood pressure75%
  2. High cholesterol73%
  3. Ischemic heart disease51%
  4. Heart failure49%
  5. Diabetes43%
  6. Chronic kidney disease41%
  7. Arthritis39%
  8. Atrial fibrillation37%

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

Dr. Asenjo's patients across all payers

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

Patient panel by age, all payers

Median age 67

Patient panel by sex, all payers

  • Women54%
  • Men44%

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

Dr. Juan C. Asenjo wrote 329 Medicare Part D claims in 2024

In 2024, Dr. Asenjo wrote 329 Medicare Part D claims for 100 patients. 90% of them were for generic drugs. CMS names the drug for 129 of them, across 6 drugs with 11 or more claims each, at $1,827 in total drug cost. In 2023, CMS named 102 claims across 5 drugs.

Part D claims, 2024329
Drugs named by CMS6
Total drug cost$1,827
Part D patients100

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

  • Generic296 claims90%
  • Brand-name33 claims10%

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

  • Antibiotics9%30 of 329 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: 1022024: 12926%

Drugs named by CMS: 6 in 2024, 5 in 2023.

See all prescribing by Dr. Asenjo

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. Juan C. Asenjo offers telehealth to Medicare patients

Dr. Asenjo accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Asenjo as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Juan C. Asenjo has worked on 2 clinical trials

Dmand AI links Dr. Asenjo to 2 clinical trials, 2 of them phase 3 studies. Conditions studied include Pain, Postoperative, Prostatic Neoplasms and Postoperative Complications. McGill University Health Centre/Research Institute of the McGill University Health Centre sponsors the most, 2.

Conditions in Dr. Asenjo's trials

  • Pain, Postoperative
  • Prostatic Neoplasms
  • Postoperative Complications
  • Prostatic Diseases

Recent clinical trials with Dr. Asenjo

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

Dr. Juan C. Asenjo graduated from UC Davis School of Medicine

Dr. Asenjo graduated from UC Davis School of Medicine in 2000.

  1. Medical schoolUC Davis School of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Juan C. Asenjo accepts plans from 2 insurance carriers

Dr. Asenjo is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

  • Kaiser Permanente
  • CMS Medicare

Plan types Dr. Asenjo accepts, by number of carriers

  1. EPO1
  2. HMO1
  3. Medicare1
  4. POS1

Source: Dmand AI Insurance Network Data

Sources for Dr. Juan C. Asenjo'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)
Clinical trials and co-investigatorsClinicalTrials.gov (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
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. Juan C. Asenjo

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. Juan C. Asenjo's NPI number?

Dr. Juan C. Asenjo's NPI number is 1609954486. It was assigned on November 1, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Juan C. Asenjo?

Dr. Juan C. Asenjo is a hospitalist in Oakland, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).

Where does Dr. Juan C. Asenjo practice?

Dr. Asenjo practices at 380 West MacArthur Boulevard, Oakland, CA 94609. Dr. Asenjo's primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California.

What is Dr. Juan C. Asenjo's office phone number?

The practice phone on file for Dr. Asenjo is (510) 251-0121.

What is Dr. Juan C. Asenjo's medical license number?

Dr. Asenjo's California license number on file is A77526.

Which hospitals is Dr. Juan C. Asenjo affiliated with?

Dr. Asenjo is affiliated with Oakland Medical Center.

What medical group is Dr. Juan C. Asenjo part of?

Dr. Asenjo is linked to The Permanente Medical Group, Inc.

Does Dr. Juan C. Asenjo accept Medicare?

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

Does Dr. Juan C. Asenjo offer telehealth?

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

How many Medicare patients does Dr. Juan C. Asenjo see?

CMS counts 49 Medicare patients who saw Dr. Asenjo in 2024, with an average age of 72.

Show 7 more questionsShow fewer questions

Is Dr. Juan C. Asenjo board certified?

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

What services does Dr. Juan C. Asenjo bill to Medicare?

In 2024, Dr. Asenjo's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99238) and hospital inpatient care (99222).

Where did Dr. Juan C. Asenjo go to medical school?

Dr. Asenjo graduated from UC Davis School of Medicine in 2000.

What drugs does Dr. Juan C. Asenjo prescribe most?

In 2024 Medicare Part D data, Dr. Asenjo's most prescribed drugs by claims were Atorvastatin Calcium, Clopidogrel and Metoprolol Tartrate.

How long has Dr. Juan C. Asenjo been practicing?

Dr. Asenjo graduated from medical school in 2000, 26 years ago.

Does Dr. Juan C. Asenjo do research?

Dr. Asenjo has worked on 2 clinical trials.

What insurance does Dr. Juan C. Asenjo accept?

Dr. Asenjo is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

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