Dr. Josiah Nathan Joco Perez, MD
- Medicare services, 2024
- 261
- Medicare patients, 2024
- 338
- Part D claims, 2022
- 20
- Hospital affiliations
- 1
- Industry payments
- $1,447
- Practice address
- 1100 9th Ave, Seattle, WA 98101
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Virginia Mason Medical Center - HOPD
Acute Care Hospital outpatient department · Seattle, Washington
Find Dr. Perez's professional email, personal email and mobile number
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Dr. Josiah Nathan Joco Perez is an anesthesiologist in Seattle, Washington
Dr. Perez practices at Virginia Mason Medical Center - HOPD in Seattle, Washington.
Dr. Perez's NPI, 1730512682, was assigned on August 14, 2013. Dr. Perez graduated from Oregon Health Sciences University School of Medicine in 2017. Dr. Perez holds Washington license MD61145157.
- NPI
- 1730512682NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9931477270
- NPI enumeration date
- August 14, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Josiah Nathan Joco Perez practices at Virginia Mason Medical Center - HOPD in Seattle, Washington
Dr. Perez's primary practice is Virginia Mason Medical Center - HOPD, at 1100 9th Ave, Seattle, WA 98101.
- Virginia Mason Medical Center - HOPD1100 9th Ave, Seattle, WA 98101
Source: Dmand AI Affiliation Data
Dr. Josiah Nathan Joco Perez is affiliated with 5 sites of care and 2 medical groups
Dr. Perez's primary practice is Virginia Mason Medical Center - HOPD in Seattle, Washington. Dr. Perez is also affiliated with Virginia Mason Medical Center. The medical group on file is Franciscan Orthopedics - Silverdale. Dmand AI also links Dr. Perez to 2 more group practices and clinics, 1 imaging center and 1 medical group, each named with a free account. Dr. Perez's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Josiah Nathan Joco Perez's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Perez practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Virginia Mason Medical Center - HOPD | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Josiah Nathan Joco Perez is one of 1,332 anesthesiologists in Washington
Anesthesiology is Dr. Perez's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dmand AI has Dr. Perez's licenses on file in 2 states: Washington and California.
Specialties and state licenses
- Anesthesiology, WashingtonPrimary
- Pain medicine (anesthesiology), California
Anesthesiologists near Dr. Perez
Counts of anesthesiologists 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. Josiah Nathan Joco Perez billed Medicare for 261 services in 2024
CMS data shows 261 Medicare services from Dr. Perez across 10 procedure codes in 2024, for 338 Medicare patients. Medicare paid $17,100 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Perez's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2162024: 16524%
- Anesthesia
- 2023: 1132024: 6344%
- Surgery
- 2023: 562024: 3341%
- Imaging
- 2023: 122024: 0100%
Dr. Perez compared with the Washington median for anesthesiologists, 2024
- Dr. Perez
- Washington median
- Medicare services
- 261vs 416.4 times
- Medicare patients
- 338vs 1073.2 times
- Part D claims
- 20vs 195% above
Medians across 1,312 anesthesiologists in Washington with Dmand AI profiles that report each measure.
Dr. Perez'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. Perez and other anesthesiologists in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Josiah Nathan Joco Perez treated 338 Medicare patients in 2024, average age 74
CMS counts 338 Medicare patients who saw Dr. Perez in 2024. The largest group is 65 to 74, with 139 patients. 74% of them have high blood pressure, and 68% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.73, 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. Perez's median patient age at 70, with 60% women.
Dr. Perez's Medicare patients by age, 2024
Dr. Perez's Medicare patients by sex, 2024
- Women20962%
- Men12938%
Chronic conditions among Dr. Perez's Medicare patients, 2024
- High blood pressure74%
- High cholesterol68%
- Arthritis63%
- Mood disorders33%
- Depression30%
- Anxiety29%
- Ischemic heart disease26%
- Chronic kidney disease25%
Share of Medicare patients with each condition. A patient can have several.
Dr. Perez's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women60%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Josiah Nathan Joco Perez wrote 20 Medicare Part D claims in 2022
In 2022, Dr. Perez wrote 20 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $202 in total drug cost.
Dr. Perez's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Josiah Nathan Joco Perez takes part in Medicare
Dr. Perez 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. Josiah Nathan Joco Perez received $1,447 in industry payments from 2021 to 2024
CMS Open Payments shows 15 general payments to Dr. Perez from 7 drug and device companies from 2021 to 2024. Food and beverage make up the largest share, 100% of the total. Nevro Corp. paid the most, $545.
General payments to Dr. Perez by program year, 2021 to 2024
Companies that paid Dr. Perez the most, 2021 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Josiah Nathan Joco Perez graduated from Oregon Health Sciences University School of Medicine
Dr. Perez graduated from Oregon Health Sciences University School of Medicine in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Josiah Nathan Joco Perez'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Josiah Nathan Joco Perez
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. Josiah Nathan Joco Perez's NPI number?
Dr. Josiah Nathan Joco Perez's NPI number is 1730512682. It was assigned on August 14, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Josiah Nathan Joco Perez?
Dr. Josiah Nathan Joco Perez is an anesthesiologist in Seattle, Washington. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Josiah Nathan Joco Perez practice?
Dr. Perez practices at 1100 9th Ave, Seattle, WA 98101. Dr. Perez's primary practice is Virginia Mason Medical Center - HOPD in Seattle, Washington. Dmand AI also links Dr. Perez to 2 group practices and clinics, 1 imaging center and 1 medical group.
What is Dr. Josiah Nathan Joco Perez's medical license number?
Dr. Perez holds Washington license MD61145157, one of the licenses on file in 2 states.
Which states has Dr. Josiah Nathan Joco Perez been licensed in?
Dmand AI has state licenses on file for Dr. Perez in Washington and California.
Which hospitals is Dr. Josiah Nathan Joco Perez affiliated with?
Dr. Perez is affiliated with Virginia Mason Medical Center.
What medical group is Dr. Josiah Nathan Joco Perez part of?
Dr. Perez is linked to Franciscan Orthopedics - Silverdale. Dmand AI links Dr. Perez to 1 more medical group.
Does Dr. Josiah Nathan Joco Perez accept Medicare?
Yes. CMS data shows Dr. Perez billed Medicare for 261 services in 2024, and Dr. Perez accepts Medicare assignment.
How many Medicare patients does Dr. Josiah Nathan Joco Perez see?
CMS counts 338 Medicare patients who saw Dr. Perez in 2024, with an average age of 74.
What services does Dr. Josiah Nathan Joco Perez bill to Medicare?
In 2024, Dr. Perez's most billed Medicare services were hospital inpatient care (99231), anesthesia (01996) and office visit, established patient (99214).
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Where did Dr. Josiah Nathan Joco Perez go to medical school?
Dr. Perez graduated from Oregon Health Sciences University School of Medicine in 2017.
What drugs does Dr. Josiah Nathan Joco Perez prescribe most?
In 2022 Medicare Part D data, Dr. Perez's most prescribed drugs by claims were Gabapentin.
Has Dr. Josiah Nathan Joco Perez received payments from drug or device companies?
CMS Open Payments shows $1,447 in general payments to Dr. Perez from 7 companies from 2021 to 2024. The largest total came from Nevro Corp.
How long has Dr. Josiah Nathan Joco Perez been practicing?
Dr. Perez graduated from medical school in 2017, 9 years ago.
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