Dr. Julia T. Iwamasa, MD
- Medicare services, 2020
- 22
- Industry payments
- $96
- Affiliated sites
- 2
- State licenses
- 2
- Year NPI issued
- 2009
- Practice address
- 635 Madison Avenue 10th Floor, New York, NY 10022
- Practice phone
- Call (212) 756-5777
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
RMA East Side, NYC Fertility Clinic
Clinical Lab - Full Service · New York, New York
Find Dr. Iwamasa'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. Julia T. Iwamasa is an anesthesiologist in New York, New York
Dr. Iwamasa practices at RMA East Side, NYC Fertility Clinic in New York, New York.
Dr. Iwamasa's NPI, 1114168820, was assigned on March 11, 2009. Dr. Iwamasa holds New York license 248951-1.
- NPI
- 1114168820NPI Registry (opens in a new tab)
- NPI enumeration date
- March 11, 2009
- NPI status
- Active
- Practice phone
- (212) 756-5777
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Julia T. Iwamasa practices at RMA East Side, NYC Fertility Clinic in New York, New York
Dr. Iwamasa's primary practice is RMA East Side, NYC Fertility Clinic, at 635 Madison Avenue 10th Floor, New York, NY 10022. The practice phone is (212) 756-5777.
- RMA East Side, NYC Fertility Clinic635 Madison Avenue 10th Floor, New York, NY 10022Phone(212) 756-5777
Source: Dmand AI Affiliation Data
Dr. Julia T. Iwamasa is affiliated with 2 sites of care
Dr. Iwamasa's primary practice is RMA East Side, NYC Fertility Clinic in New York, New York. Dmand AI also links Dr. Iwamasa to 1 physician office, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Julia T. Iwamasa's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Iwamasa practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| RMA East Side, NYC Fertility Clinic | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Julia T. Iwamasa is one of 3,858 anesthesiologists in New York
Anesthesiology is Dr. Iwamasa's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dmand AI has Dr. Iwamasa's licenses on file in 2 states: New York and New Jersey.
Specialties and state licenses
- Anesthesiology, New YorkPrimary
- New Jersey license
Anesthesiologists near Dr. Iwamasa
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. Julia T. Iwamasa billed Medicare for 22 services in 2020
CMS data shows 22 Medicare services from Dr. Iwamasa across 1 procedure code in 2020. Medicare paid $2,572 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Iwamasa's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Anesthesia
- 2019: 662020: 2267%
Dr. Iwamasa compared with the New York median for anesthesiologists, 2020
- Dr. Iwamasa
- New York median
- Medicare services
- 22vs 7671% below
Medians across 3,723 anesthesiologists in New York with Dmand AI profiles that report each measure.
Dr. Iwamasa's most billed Medicare procedure codes, 2020
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. Iwamasa and other anesthesiologists in New York.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Julia T. Iwamasa's patients have a median age of 40
Across all payers, Dmand AI patient panel data puts Dr. Iwamasa's median patient age at 40, with 100% women.
Dr. Iwamasa's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 40
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
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Dr. Julia T. Iwamasa received $96 in industry payments from 2016 to 2020
CMS Open Payments shows 5 general payments to Dr. Iwamasa from 3 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. Bausch Health Americas, Inc. paid the most, $58.
General payments to Dr. Iwamasa by program year, 2016 to 2020
Companies that paid Dr. Iwamasa the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Julia T. Iwamasa'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 Data |
| 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. Julia T. Iwamasa
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. Julia T. Iwamasa's NPI number?
Dr. Julia T. Iwamasa's NPI number is 1114168820. It was assigned on March 11, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Julia T. Iwamasa?
Dr. Julia T. Iwamasa is an anesthesiologist in New York, New York. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Julia T. Iwamasa practice?
Dr. Iwamasa practices at 635 Madison Avenue 10th Floor, New York, NY 10022. Dr. Iwamasa's primary practice is RMA East Side, NYC Fertility Clinic in New York, New York. Dmand AI also links Dr. Iwamasa to 1 physician office.
What is Dr. Julia T. Iwamasa's office phone number?
The practice phone on file for Dr. Iwamasa is (212) 756-5777.
What is Dr. Julia T. Iwamasa's medical license number?
Dr. Iwamasa holds New York license 248951-1, one of the licenses on file in 2 states.
Which states has Dr. Julia T. Iwamasa been licensed in?
Dmand AI has state licenses on file for Dr. Iwamasa in New York and New Jersey.
Does Dr. Julia T. Iwamasa accept Medicare?
Yes. CMS data shows Dr. Iwamasa billed Medicare for 22 services in 2020.
What services does Dr. Julia T. Iwamasa bill to Medicare?
In 2020, Dr. Iwamasa's most billed Medicare services were anesthesia (00811).
Has Dr. Julia T. Iwamasa received payments from drug or device companies?
CMS Open Payments shows $96 in general payments to Dr. Iwamasa from 3 companies from 2016 to 2020. The largest total came from Bausch Health Americas, Inc.
How long has Dr. Julia T. Iwamasa been practicing?
Dr. Iwamasa's NPI was assigned in 2009.
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