Dr. Maria L. Parayno, MD
- Medicare services, 2024
- 1,235
- Medicare patients, 2024
- 1,046
- Publications
- 1
- Clinical trials
- 1
- MIPS score, 2024
- 93
- Practice address
- 1500 Duarte Rd, Duarte, CA 91010
- Practice phone
- Call (800) 826-4673
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
City of Hope Comprehensive Cancer Center - Duarte
Duarte, California
Find Dr. Parayno'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. Maria L. Parayno is a nuclear medicine physician in Duarte, California
Dr. Parayno practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California.
Dr. Parayno's NPI, 1336387505, was assigned on January 27, 2009. Dr. Parayno graduated from Tulane School of Medicine in 2006. Dr. Parayno holds California license A105761.
- NPI
- 1336387505NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698931582
- NPI enumeration date
- January 27, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (800) 826-4673
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Maria L. Parayno practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California
Dr. Parayno's primary practice is City of Hope Comprehensive Cancer Center - Duarte, at 1500 Duarte Rd, Duarte, CA 91010 in Los Angeles County. The practice phone is (800) 826-4673.
- City of Hope Comprehensive Cancer Center - Duarte1500 Duarte Rd, Duarte, CA 91010 · Los Angeles CountyPhone(800) 826-4673
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Maria L. Parayno is affiliated with 4 sites of care and 1 medical group
Dr. Parayno's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dr. Parayno is also affiliated with UCI Health - Orange. The medical group on file is City of Hope. Dmand AI also links Dr. Parayno to 1 more hospital and 1 other site, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Maria L. Parayno's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Parayno practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| City of Hope Comprehensive Cancer Center - Duarte | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Maria L. Parayno is one of 131 nuclear medicine physicians in California
Nuclear medicine is Dr. Parayno's primary specialty in the NPI Registry, under taxonomy code 207U00000X. Dr. Parayno is board certified in nuclear medicine by the American Board of Nuclear Medicine. Dmand AI has Dr. Parayno's licenses on file in 3 states: California, Massachusetts and Ohio.
Specialties and state licenses
- Nuclear medicine, CaliforniaPrimary
- Massachusetts license
- Ohio license
Nuclear medicine physicians near Dr. Parayno
Counts of nuclear medicine physicians 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. Maria L. Parayno billed Medicare for 1,235 services in 2024
CMS data shows 1,235 Medicare services from Dr. Parayno across 14 procedure codes in 2024, for 1,046 Medicare patients. Medicare paid $85,337 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Parayno's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,4792024: 1,23516%
Dr. Parayno compared with the California median for nuclear medicine physicians, 2024
- Dr. Parayno
- California median
- Medicare services
- 1,235vs 6172.0 times
- Medicare patients
- 1,046vs 4382.4 times
Medians across 97 nuclear medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Parayno'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. Parayno and other nuclear medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Maria L. Parayno treated 1,046 Medicare patients in 2024, average age 73
CMS counts 1,046 Medicare patients who saw Dr. Parayno in 2024. The largest group is 65 to 74, with 532 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 33% are also on Medicaid. Their average risk score is 2.64, 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. Parayno's median patient age at 66, with 60% women.
Dr. Parayno's Medicare patients by age, 2024
Dr. Parayno's Medicare patients by sex, 2024
- Women60558%
- Men44142%
Chronic conditions among Dr. Parayno's Medicare patients, 2024
- High blood pressure75%
- High cholesterol70%
- Cancer64%
- Arthritis46%
- Diabetes34%
- Ischemic heart disease30%
- Anxiety28%
- Chronic kidney disease28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Parayno's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women60%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Maria L. Parayno scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Parayno for performance year 2024, reported as part of a group. Dr. Parayno accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Parayno's MIPS scores, performance year 2024
- 93of 100Final score
- 78.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Maria L. Parayno has 1 publication on record
Dmand AI links 1 paper to Dr. Parayno in 2020. Dr. Parayno's most frequent co-authors are Ammar Ahmed Chaudhry, MD, Chatchada Karanes, MD and Amrita Krishnan, MD.
Dr. Parayno's most frequent co-authors
- Ammar Ahmed Chaudhry, MD1 shared paper
- Chatchada Karanes, MD1 shared paper
- Amrita Krishnan, MD1 shared paper
Recent publications by Dr. Parayno
See who Dr. Parayno researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Parayno works with, so you can find a warm path to the right nuclear medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Maria L. Parayno has worked on 1 clinical trial
Dmand AI links Dr. Parayno to 1 clinical trial.
Investigators on the most trials with Dr. Parayno
- Pradeep G. Bhambhvani, MD1 shared trial
- David L. Bushnell, MD1 shared trial
- Paul B. Chapman, MD1 shared trial
Recent clinical trials with Dr. Parayno
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Maria L. Parayno received $100 in industry payments from 2016 to 2020
CMS Open Payments shows 5 general payments to Dr. Parayno from 3 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. Siemens Medical Solutions USA, Inc. paid the most, $36.
General payments to Dr. Parayno by program year, 2016 to 2020
Companies that paid Dr. Parayno the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Maria L. Parayno graduated from Tulane School of Medicine
Dr. Parayno graduated from Tulane School of Medicine in 2006.
- Medical school
- Board certified in nuclear medicine
- Board certified in diagnostic radiology
Source: Dmand AI Professional Profile Data
Dr. Maria L. Parayno accepts plans from 10 insurance carriers
Dr. Parayno is in network with 10 carriers, including Aetna, United Healthcare and Elevance. HMO plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Elevance
- HCSC
- Alliant Health Plans
- Blue Cross and Blue Shield of Kansas City
- Blue Cross Blue Shield of Michigan
- CMS Medicare
- +2 more carriersWith a free account
Plan types Dr. Parayno accepts, by number of carriers
- HMO6
- PPO4
- EPO3
- Medicare3
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Maria L. Parayno'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 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 DataMedicare Physician & Other Practitioners - 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)Clinician Public Reporting: Overall MIPS Performance (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 |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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 |
| 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. Maria L. Parayno
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. Maria L. Parayno's NPI number?
Dr. Maria L. Parayno's NPI number is 1336387505. It was assigned on January 27, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Maria L. Parayno?
Dr. Maria L. Parayno is a nuclear medicine physician in Duarte, California. The primary specialty in the NPI Registry is Nuclear Medicine Physician (taxonomy code 207U00000X).
Where does Dr. Maria L. Parayno practice?
Dr. Parayno practices at 1500 Duarte Rd, Duarte, CA 91010. Dr. Parayno's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dmand AI also links Dr. Parayno to 1 hospital and 1 other site.
What is Dr. Maria L. Parayno's office phone number?
The practice phone on file for Dr. Parayno is (800) 826-4673.
What is Dr. Maria L. Parayno's medical license number?
Dr. Parayno holds California license A105761, one of the licenses on file in 3 states.
Which states has Dr. Maria L. Parayno been licensed in?
Dmand AI has state licenses on file for Dr. Parayno in California (2008 to 2026), Massachusetts (2011 to 2012) and Ohio (2007 to 2009).
Which hospitals is Dr. Maria L. Parayno affiliated with?
Dr. Parayno is affiliated with UCI Health - Orange. Dmand AI links Dr. Parayno to 1 more hospital.
What medical group is Dr. Maria L. Parayno part of?
Dr. Parayno is linked to City of Hope.
Does Dr. Maria L. Parayno accept Medicare?
Yes. CMS data shows Dr. Parayno billed Medicare for 1,235 services in 2024, and Dr. Parayno accepts Medicare assignment.
What is Dr. Maria L. Parayno's MIPS score?
Dr. Parayno's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.
Show 9 more questionsShow fewer questions
How many Medicare patients does Dr. Maria L. Parayno see?
CMS counts 1,046 Medicare patients who saw Dr. Parayno in 2024, with an average age of 73.
Is Dr. Maria L. Parayno board certified?
Yes. Dr. Parayno is board certified in nuclear medicine by the American Board of Nuclear Medicine.
What services does Dr. Maria L. Parayno bill to Medicare?
In 2024, Dr. Parayno's most billed Medicare services were nuclear medicine (78815), nuclear medicine (78816) and nuclear medicine (78306).
Where did Dr. Maria L. Parayno go to medical school?
Dr. Parayno graduated from Tulane School of Medicine in 2006.
Has Dr. Maria L. Parayno received payments from drug or device companies?
CMS Open Payments shows $100 in general payments to Dr. Parayno from 3 companies from 2016 to 2020. The largest total came from Siemens Medical Solutions USA, Inc.
How long has Dr. Maria L. Parayno been practicing?
Dr. Parayno graduated from medical school in 2006, 20 years ago.
Does Dr. Maria L. Parayno do research?
Dmand AI links 1 publication to Dr. Parayno. Dr. Parayno has worked on 1 clinical trial.
Who does Dr. Maria L. Parayno publish with?
Dr. Parayno's most frequent co-authors are Ammar Ahmed Chaudhry, MD (1 shared paper), Chatchada Karanes, MD (1 shared paper) and Amrita Krishnan, MD (1 shared paper).
What insurance does Dr. Maria L. Parayno accept?
Dr. Parayno is in network with 10 carriers, including Aetna, United Healthcare and Elevance. HMO plans come from the most carriers, 6. Check the plan with the practice before a visit.
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