Dr. Daniel Nagasawa, MD

  • Santa Monica, CA
  • Neurosurgeon
NPI1578820536PAC ID6608129945
Medicare services, 2024
561
Medicare patients, 2024
230
Part D claims, 2024
29
Publications
39
Hospital affiliations
3
Practice address
2811 Wilshire Blvd, Santa Monica, CA 90403
Practice phone
Call (310) 829-5968
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Neurological Associates Surgery Center

Santa Monica, California

See all 10 affiliations

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Dr. Daniel Nagasawa is a neurosurgeon in Santa Monica, California

Dr. Nagasawa practices at Neurological Associates Surgery Center in Santa Monica, California.

Dr. Nagasawa's NPI, 1578820536, was assigned on April 16, 2012. Dr. Nagasawa graduated from University of California, Irvine, California College of Medicine in 2012. Dr. Nagasawa's California license number on file is A129098.

NPI and contact details
Medicare PAC ID
6608129945
NPI enumeration date
April 16, 2012
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(310) 829-5968
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 Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Daniel Nagasawa practices at Neurological Associates Surgery Center in Santa Monica, California

Dr. Nagasawa's primary practice is Neurological Associates Surgery Center, at 2811 Wilshire Blvd, Santa Monica, CA 90403 in Los Angeles County. The practice phone is (310) 829-5968.

  • Neurological Associates Surgery Center
    2811 Wilshire Blvd, Santa Monica, CA 90403 · Los Angeles CountyPhone(310) 829-5968

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Daniel Nagasawa is affiliated with 8 sites of care and 2 medical groups

Dr. Nagasawa's primary practice is Neurological Associates Surgery Center in Santa Monica, California. Dr. Nagasawa is also affiliated with Providence Saint John's Health Center. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Nagasawa to 2 more hospitals, 2 group practices and clinics, 1 physician office, 1 home health agency and 1 medical group, each named with a free account.

See all 10 affiliations for Dr. Nagasawa

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Daniel Nagasawa's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nagasawa practices, 7 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Neurological Associates Surgery CenterAvailable with a free account
+7 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Daniel Nagasawa is one of 846 neurosurgeons in California

Neurological surgery is Dr. Nagasawa's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Nagasawa is board certified in neurological surgery by the American Board of Neurological Surgery. Dr. Nagasawa has a license on file in California.

Specialties and state licenses

  • Neurological surgery, CaliforniaPrimaryLicense A129098 · 2014 to 2025 · taxonomy 207T00000X

Clinical focus

Dmand AI lists back and neck pain treatment without fusion, lower back pain, neck pain and spine problems, spinal fusion and thoracic spine disorders among the conditions Dr. Nagasawa treats.

Neurosurgeons near Dr. Nagasawa

Counts of neurosurgeons 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. Daniel Nagasawa billed Medicare for 561 services in 2024

CMS data shows 561 Medicare services from Dr. Nagasawa across 12 procedure codes in 2024, for 230 Medicare patients. Medicare paid $115,550 for them.

Medicare services, 2024561
Medicare patients230
Paid by Medicare$115,550
Procedure codes12

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

  • 2023
  • 2024
Office and hospital visits
2023: 3932024: 4074%
Surgery
2023: 1712024: 15410%

Where Dr. Nagasawa's Medicare services took place, 2024

  • In an office24043%
  • In a facility32157%

Dr. Nagasawa compared with the California median for neurosurgeons, 2024

  • Dr. Nagasawa
  • California median
Medicare services
561vs 2162.6 times
Medicare patients
230vs 15449% above
Part D claims
11vs 2658% below

Medians across 679 neurosurgeons in California with Dmand AI profiles that report each measure.

Dr. Nagasawa'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. Nagasawa

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nagasawa and other neurosurgeons in California.

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

Dr. Daniel Nagasawa treated 230 Medicare patients in 2024, average age 77

CMS counts 230 Medicare patients who saw Dr. Nagasawa in 2024. The largest group is 65 to 74, with 89 patients. 75% of them have arthritis, and 75% have high blood pressure. 28% are also on Medicaid. Their average risk score is 1.59, 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. Nagasawa's median patient age at 60, with 55% women.

Medicare patients, 2024230
Average age77
Average risk score1.59
Also on Medicaid28%

Dr. Nagasawa's Medicare patients by age, 2024

Dr. Nagasawa's Medicare patients by sex, 2024

  • Women13960%
  • Men9140%

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

  1. Arthritis75%
  2. High blood pressure75%
  3. High cholesterol75%
  4. Ischemic heart disease40%
  5. Mood disorders39%
  6. Anxiety37%
  7. Depression35%
  8. Diabetes35%

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

Dr. Nagasawa's patients across all payers

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

Patient panel by age, all payers

Median age 60

Patient panel by sex, all payers

  • Women55%
  • Men45%

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

Dr. Daniel Nagasawa wrote 29 Medicare Part D claims in 2024

In 2024, Dr. Nagasawa wrote 29 Medicare Part D claims for 19 patients. 83% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $198 in total drug cost. In 2023, CMS named 35 claims across 2 drugs.

Part D claims, 202429
Drugs named by CMS1
Total drug cost$198
Part D patients19

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

  • Generic24 claims83%
  • Brand-name and other5 claims17%

Dr. Nagasawa'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.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 352024: 1169%

Drugs named by CMS: 1 in 2024, 2 in 2023.

See all prescribing by Dr. Nagasawa

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. Daniel Nagasawa ranks in the 83rd percentile for spinal fusion in Medicare

Dr. Nagasawa accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nagasawa as offering telehealth. CMS counts 147 procedures of spinal fusion by Dr. Nagasawa, more than 83% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Where Dr. Nagasawa ranks in Medicare procedure volume

Spinal fusion
83rd percentile147 procedures
Laminectomy or laminotomy (partial removal of spine bones)
78th percentile51 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Daniel Nagasawa has 39 publications on record

Dmand AI links 39 papers to Dr. Nagasawa, published from 2011 to 2024. 2017 was the busiest year, with 13. The most frequent topics are Brain Neoplasms, Glioblastoma and Antineoplastic Agents. Dr. Nagasawa has published most often in Clin Neurol Neurosurg. Dr. Nagasawa's most frequent co-authors are Isaac Yang, MD, Lawrance Kon-Yip Chung, MD and Andrew Yenphu Yew, MD.

Papers39
Years published2011 to 2024

Dr. Nagasawa's papers by year, 2013 to 2024

Topics Dr. Nagasawa writes about most

  • Brain Neoplasms
  • Glioblastoma
  • Antineoplastic Agents
  • Magnetic Resonance Imaging
  • Accidental Falls
  • Accidents, Traffic
  • Biomarkers, Tumor
  • Cell Transformation, Neoplastic

Dr. Nagasawa's most frequent co-authors

Recent publications by Dr. Nagasawa

See all 39 publications and co-authors

See who Dr. Nagasawa researches with

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

How network discovery works

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

Dr. Daniel Nagasawa received $12,555 in industry payments from 2017 to 2025

CMS Open Payments shows 158 general payments to Dr. Nagasawa from 29 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 70% of the total. Nuvasive, Inc. paid the most, $2,654.

General payments to Dr. Nagasawa by program year, 2017 to 2025

General payments to Dr. Nagasawa by kind, 2017 to 2025

$12.6Kin total
  • Food and beverage$8,74170%
  • Travel and lodging$2,21418%
  • Consulting fees$1,60013%

Companies that paid Dr. Nagasawa the most, 2017 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Nagasawa

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

Dr. Daniel Nagasawa graduated from University of California, Irvine, California College of Medicine

Dr. Nagasawa graduated from University of California, Irvine, California College of Medicine in 2012. Dr. Nagasawa is a member of CNS.

  1. Medical schoolUniversity of California, Irvine, California College of Medicine
  2. Board certified in neurological surgeryAmerican Board of Neurological Surgery

Source: Dmand AI Professional Profile Data

Dr. Daniel Nagasawa accepts plans from 16 insurance carriers

Dr. Nagasawa is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.

Plan types Dr. Nagasawa accepts, by number of carriers

  1. HMO9
  2. Medicare8
  3. PPO8
  4. EPO4
  5. POS4
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Daniel Nagasawa'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 phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)Doctors and Clinicians Utilization Data (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. Daniel Nagasawa

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. Daniel Nagasawa's NPI number?

Dr. Daniel Nagasawa's NPI number is 1578820536. It was assigned on April 16, 2012, and it is active in the NPI Registry.

What kind of doctor is Dr. Daniel Nagasawa?

Dr. Daniel Nagasawa is a neurosurgeon in Santa Monica, California. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).

Where does Dr. Daniel Nagasawa practice?

Dr. Nagasawa practices at 2811 Wilshire Blvd, Santa Monica, CA 90403. Dr. Nagasawa's primary practice is Neurological Associates Surgery Center in Santa Monica, California. Dmand AI also links Dr. Nagasawa to 2 hospitals, 2 group practices and clinics, 1 physician office, 1 home health agency and 1 medical group.

What is Dr. Daniel Nagasawa's office phone number?

The practice phone on file for Dr. Nagasawa is (310) 829-5968.

What is Dr. Daniel Nagasawa's medical license number?

Dr. Nagasawa's California license number on file is A129098.

Which hospitals is Dr. Daniel Nagasawa affiliated with?

Dr. Nagasawa is affiliated with Providence Saint John's Health Center. Dmand AI links Dr. Nagasawa to 2 more hospitals.

What medical group is Dr. Daniel Nagasawa part of?

Dr. Nagasawa is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Nagasawa to 1 more medical group.

Does Dr. Daniel Nagasawa accept Medicare?

Yes. CMS data shows Dr. Nagasawa billed Medicare for 561 services in 2024, and Dr. Nagasawa accepts Medicare assignment.

Does Dr. Daniel Nagasawa offer telehealth?

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

How many Medicare patients does Dr. Daniel Nagasawa see?

CMS counts 230 Medicare patients who saw Dr. Nagasawa in 2024, with an average age of 77.

Show 9 more questionsShow fewer questions

Is Dr. Daniel Nagasawa board certified?

Yes. Dr. Nagasawa is board certified in neurological surgery by the American Board of Neurological Surgery.

What services does Dr. Daniel Nagasawa bill to Medicare?

In 2024, Dr. Nagasawa's most billed Medicare services were critical care (99291), office visit, new patient (99205) and surgery: bones and joints (22614).

Where did Dr. Daniel Nagasawa go to medical school?

Dr. Nagasawa graduated from University of California, Irvine, California College of Medicine in 2012.

What drugs does Dr. Daniel Nagasawa prescribe most?

In 2024 Medicare Part D data, Dr. Nagasawa's most prescribed drugs by claims were Gabapentin.

Has Dr. Daniel Nagasawa received payments from drug or device companies?

CMS Open Payments shows $12,555 in general payments to Dr. Nagasawa from 29 companies from 2017 to 2025. The largest total came from Nuvasive, Inc.

How long has Dr. Daniel Nagasawa been practicing?

Dr. Nagasawa graduated from medical school in 2012, 14 years ago.

Does Dr. Daniel Nagasawa do research?

Dmand AI links 39 publications to Dr. Nagasawa, published from 2011 to 2024.

Who does Dr. Daniel Nagasawa publish with?

Dr. Nagasawa's most frequent co-authors are Isaac Yang, MD (23 shared papers), Lawrance Kon-Yip Chung, MD (9 shared papers) and Andrew Yenphu Yew, MD (8 shared papers).

What insurance does Dr. Daniel Nagasawa accept?

Dr. Nagasawa is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. HMO plans come from the most carriers, 9. Check the plan with the practice before a visit.

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