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Brain NeoplasmsCell LineFetus
Dr. Don J. Nishiguchi, MD
NPI1043368277PAC ID2264446731
- Medicare services, 2024
- 260
- Medicare patients, 2024
- 170
- Part D claims, 2024
- 218
- Publications
- 2
- Hospital affiliations
- 1
- Practice address
- 25751 McBean Pkwy, Valencia, CA 91355
- Practice phone
- Call (661) 284-3100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Santa Clarita Health Center
Valencia, California
Find Dr. Nishiguchi'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. Don J. Nishiguchi is an obstetrics physician in Valencia, California
Dr. Nishiguchi practices at Santa Clarita Health Center in Valencia, California.
Dr. Nishiguchi's NPI, 1043368277, was assigned on January 5, 2007. Dr. Nishiguchi graduated from Ohio State College of Medicine in 1984. Dr. Nishiguchi holds California license G055628.
NPI and contact details
- NPI
- 1043368277NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264446731
- NPI enumeration date
- January 5, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (661) 284-3100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Don J. Nishiguchi practices at Santa Clarita Health Center in Valencia, California
Dr. Nishiguchi's primary practice is Santa Clarita Health Center, at 25751 McBean Pkwy, Valencia, CA 91355 in Los Angeles County. The practice phone is (661) 284-3100.
- Santa Clarita Health Center25751 McBean Pkwy, Valencia, CA 91355 · Los Angeles CountyPhone(661) 284-3100
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Don J. Nishiguchi is affiliated with 5 sites of care and 3 medical groups
Dr. Nishiguchi's primary practice is Santa Clarita Health Center in Valencia, California. Dr. Nishiguchi is also affiliated with Henry Mayo Newhall Hospital. The medical group on file is SCCT Medical Group. Dmand AI also links Dr. Nishiguchi to 3 more group practices and clinics and 2 medical groups, each named with a free account.
Santa Clarita Health CenterPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Don J. Nishiguchi's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nishiguchi practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Santa Clarita Health Center | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Don J. Nishiguchi is one of 164 obstetrics physicians in California
Obstetrics is Dr. Nishiguchi's primary specialty in the NPI Registry, under taxonomy code 207VX0000X. Dr. Nishiguchi is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dr. Nishiguchi is licensed in California.
Specialties and state licenses
- Obstetrics, CaliforniaPrimary
Clinical focus
Dmand AI lists menopause, ovarian cyst, pelvic prolapse, UTI and vaginal infection among the conditions Dr. Nishiguchi treats.
Obstetrics physicians near Dr. Nishiguchi
Counts of obstetrics physicians with a Dmand AI profile, by place and practice. Each opens the list.
164obstetrics physicians in California
2obstetrics physicians in Valencia
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Don J. Nishiguchi billed Medicare for 260 services in 2024
CMS data shows 260 Medicare services from Dr. Nishiguchi across 6 procedure codes in 2024, for 170 Medicare patients. Medicare paid $14,890 for them. Every service was in an office.
Medicare services, 2024260
Medicare patients170
Paid by Medicare$14,890
Procedure codes6
Dr. Nishiguchi's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 1362024: 1304%
- Office and hospital visits
- 2023: 532024: 6625%
- Imaging
- 2023: 342024: 4738%
- Lab and pathology
- 2023: 02024: 17
Dr. Nishiguchi compared with the California median for obstetrics physicians, 2024
- Dr. Nishiguchi
- California median
- Medicare services
- 260vs 525.0 times
- Medicare patients
- 170vs 414.1 times
- Part D claims
- 164vs 344.8 times
Medians across 116 obstetrics physicians in California with Dmand AI profiles that report each measure.
Dr. Nishiguchi'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. Nishiguchi?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nishiguchi and other obstetrics physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Don J. Nishiguchi treated 170 Medicare patients in 2024, average age 72
CMS counts 170 Medicare patients who saw Dr. Nishiguchi in 2024. The largest group is 65 to 74, with 99 patients. 75% of them have high cholesterol, and 59% have high blood pressure. Their average risk score is 0.80, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Nishiguchi's median patient age at 49, with 100% women.
Medicare patients, 2024170
Average age72
Average risk score0.80
Dr. Nishiguchi's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Nishiguchi's Medicare patients, 2024
- High cholesterol75%
- High blood pressure59%
- Arthritis48%
- Osteoporosis26%
- Anxiety23%
- Diabetes21%
- Asthma16%
- Ischemic heart disease15%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nishiguchi's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 49
Patient panel by sex, all payers
- Women100%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Don J. Nishiguchi wrote 218 Medicare Part D claims in 2024
In 2024, Dr. Nishiguchi wrote 218 Medicare Part D claims for 81 patients. 90% of them were for generic drugs. CMS names the drug for 164 of them, across 7 drugs with 11 or more claims each, at $9,450 in total drug cost. In 2023, CMS named 44 claims across 3 drugs.
Part D claims, 2024218
Drugs named by CMS7
Total drug cost$9,450
Part D patients81
Dr. Nishiguchi's Part D claims by kind of drug, 2024
- Generic197 claims90%
- Brand-name and other21 claims10%
Dr. Nishiguchi'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. Nishiguchi's Part D claims, 2024
- Antibiotics13%28 of 218 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: 442024: 164273%
Drugs named by CMS: 7 in 2024, 3 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
How Dr. Don J. Nishiguchi takes part in Medicare
Dr. Nishiguchi accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Don J. Nishiguchi has 2 publications on record
Dmand AI links 2 papers to Dr. Nishiguchi. The most frequent topics are Fluorescent Antibody Technique.
Papers2
Topics Dr. Nishiguchi writes about most
- Fluorescent Antibody Technique
Recent publications by Dr. Nishiguchi
J Neurocytol
Animals, NewbornBrain ChemistryCells, Cultured
See who Dr. Nishiguchi researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Nishiguchi works with, so you can find a warm path to the right obstetrics physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Don J. Nishiguchi received $5,463 in industry payments from 2016 to 2025
CMS Open Payments shows 293 general payments to Dr. Nishiguchi from 39 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 93% of the total. Abbvie Inc. paid the most, $1,386.
General payments to Dr. Nishiguchi by program year, 2016 to 2025
General payments to Dr. Nishiguchi by kind, 2016 to 2025
$5.5Kin total
- Food and beverage$5,09893%
- Education$2404%
- Consulting fees$1252%
Companies that paid Dr. Nishiguchi 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. Don J. Nishiguchi has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Nishiguchi, most recently CMS Stage 1 EHR in 2011.
Awards and honors for Dr. Nishiguchi
- 2011
- CMS Stage 1 EHR
- Undated
- ACOG Fellow
Source: Dmand AI Professional Profile Data
Dr. Don J. Nishiguchi graduated from Ohio State College of Medicine
Dr. Nishiguchi graduated from Ohio State College of Medicine in 1984. Dr. Nishiguchi is a member of American College of Obstetricians and Gynecologists.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Don J. Nishiguchi accepts plans from 7 insurance carriers
Dr. Nishiguchi 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, 6. 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
- Elevance
Plan types Dr. Nishiguchi accepts, by number of carriers
- Medicare6
- PPO5
- HMO3
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Don J. Nishiguchi'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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. Don J. Nishiguchi
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. Don J. Nishiguchi's NPI number?
Dr. Don J. Nishiguchi's NPI number is 1043368277. It was assigned on January 5, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Don J. Nishiguchi?
Dr. Don J. Nishiguchi is an obstetrics physician in Valencia, California. The primary specialty in the NPI Registry is Obstetrics Physician (taxonomy code 207VX0000X).
Where does Dr. Don J. Nishiguchi practice?
Dr. Nishiguchi practices at 25751 McBean Pkwy, Valencia, CA 91355. Dr. Nishiguchi's primary practice is Santa Clarita Health Center in Valencia, California. Dmand AI also links Dr. Nishiguchi to 3 group practices and clinics and 2 medical groups.
What is Dr. Don J. Nishiguchi's office phone number?
The practice phone on file for Dr. Nishiguchi is (661) 284-3100.
What is Dr. Don J. Nishiguchi's medical license number?
Dr. Nishiguchi holds California license G055628.
Which hospitals is Dr. Don J. Nishiguchi affiliated with?
Dr. Nishiguchi is affiliated with Henry Mayo Newhall Hospital.
What medical group is Dr. Don J. Nishiguchi part of?
Dr. Nishiguchi is linked to SCCT Medical Group. Dmand AI links Dr. Nishiguchi to 2 more medical groups.
Does Dr. Don J. Nishiguchi accept Medicare?
Yes. CMS data shows Dr. Nishiguchi billed Medicare for 260 services in 2024, and Dr. Nishiguchi accepts Medicare assignment.
How many Medicare patients does Dr. Don J. Nishiguchi see?
CMS counts 170 Medicare patients who saw Dr. Nishiguchi in 2024, with an average age of 72.
Is Dr. Don J. Nishiguchi board certified?
Yes. Dr. Nishiguchi is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
Show 7 more questionsShow fewer questions
What services does Dr. Don J. Nishiguchi bill to Medicare?
In 2024, Dr. Nishiguchi's most billed Medicare services were medicare service (G0101), office visit, established patient (99214) and ultrasound (76856).
Where did Dr. Don J. Nishiguchi go to medical school?
Dr. Nishiguchi graduated from Ohio State College of Medicine in 1984.
What drugs does Dr. Don J. Nishiguchi prescribe most?
In 2024 Medicare Part D data, Dr. Nishiguchi's most prescribed drugs by claims were Estradiol, Progesterone and Valacyclovir.
Has Dr. Don J. Nishiguchi received payments from drug or device companies?
CMS Open Payments shows $5,463 in general payments to Dr. Nishiguchi from 39 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Don J. Nishiguchi been practicing?
Dr. Nishiguchi graduated from medical school in 1984, 42 years ago.
Does Dr. Don J. Nishiguchi do research?
Dmand AI links 2 publications to Dr. Nishiguchi.
What insurance does Dr. Don J. Nishiguchi accept?
Dr. Nishiguchi 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, 6. Check the plan with the practice before a visit.
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