Dr. Chelsea A. Hayes, MD
- Medicare services, 2021
- 659
- Hospital affiliations
- 3
- Industry payments
- $32
- Medical groups
- 2
- State licenses
- 2
- Practice address
- 100 W. California Blvd, Pasadena, CA 91105
- Practice phone
- Call (626) 397-2618
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Huntington Hospital - Unit
Acute Care Hospital-Unit · Pasadena, California
Find Dr. Hayes' 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. Chelsea A. Hayes is a hematology (pathology) physician in Pasadena, California
Dr. Hayes practices at Huntington Hospital - Unit in Pasadena, California.
Dr. Hayes' NPI, 1942563226, was assigned on June 21, 2012. Dr. Hayes holds Colorado license DR.0066430.
- NPI
- 1942563226NPI Registry (opens in a new tab)
- NPI enumeration date
- June 21, 2012
- NPI status
- Active
- Practice phone
- (626) 397-2618
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Chelsea A. Hayes practices at Huntington Hospital - Unit in Pasadena, California
Dr. Hayes' primary practice is Huntington Hospital - Unit, at 100 W. California Blvd, Pasadena, CA 91105 in Los Angeles County. The practice phone is (626) 397-2618.
- Huntington Hospital - Unit100 W. California Blvd, Pasadena, CA 91105 · Los Angeles CountyPhone(626) 397-2618
Source: Dmand AI Affiliation Data
Dr. Chelsea A. Hayes is affiliated with 3 sites of care and 2 medical groups
Dr. Hayes' primary practice is Huntington Hospital - Unit in Pasadena, California. Dr. Hayes is also affiliated with Huntington Hospital. The medical group on file is Cedars-Sinai Medical Group. Dmand AI also links Dr. Hayes to 1 more hospital and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Chelsea A. Hayes' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hayes practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Huntington Hospital - Unit | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Chelsea A. Hayes is one of 50 hematology (pathology) physicians in California
Hematology is Dr. Hayes' primary specialty in the NPI Registry, under taxonomy code 207ZH0000X. Dmand AI has Dr. Hayes' licenses on file in 2 states: Colorado and California.
Specialties and state licenses
- Hematology (pathology), ColoradoPrimary
- Anatomic pathology and clinical pathology, California
Hematology (pathology) physicians near Dr. Hayes
Counts of hematology (pathology) 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. Chelsea A. Hayes billed Medicare for 659 services in 2021
CMS data shows 659 Medicare services from Dr. Hayes across 8 procedure codes in 2021. Medicare paid $32,334 for them.
Dr. Hayes' Medicare services by type, 2020 to 2021
- 2020
- 2021
- Lab and pathology
- 2020: 5412021: 5919%
- Surgery
- 2020: 692021: 681%
Where Dr. Hayes' Medicare services took place, 2021
- In an office9014%
- In a facility56986%
Dr. Hayes compared with the California median for hematology (pathology) physicians, 2021
- Dr. Hayes
- California median
- Medicare services
- 659vs 90227% below
Medians across 31 hematology (pathology) physicians in California with Dmand AI profiles that report each measure.
Dr. Hayes' most billed Medicare procedure codes, 2021
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. Hayes?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hayes and other hematology (pathology) physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chelsea A. Hayes' patients have a median age of 39
Across all payers, Dmand AI patient panel data puts Dr. Hayes' median patient age at 39, with 50% women.
Dr. Hayes' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 39
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Chelsea A. Hayes received $32 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Hayes from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Immucor, Inc. paid the most, $32.
Companies that paid Dr. Hayes the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Chelsea A. Hayes'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 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. Chelsea A. Hayes
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. Chelsea A. Hayes' NPI number?
Dr. Chelsea A. Hayes' NPI number is 1942563226. It was assigned on June 21, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Chelsea A. Hayes?
Dr. Chelsea A. Hayes is a hematology (pathology) physician in Pasadena, California. The primary specialty in the NPI Registry is Hematology (Pathology) Physician (taxonomy code 207ZH0000X).
Where does Dr. Chelsea A. Hayes practice?
Dr. Hayes practices at 100 W. California Blvd, Pasadena, CA 91105. Dr. Hayes' primary practice is Huntington Hospital - Unit in Pasadena, California. Dmand AI also links Dr. Hayes to 1 hospital and 1 medical group.
What is Dr. Chelsea A. Hayes' office phone number?
The practice phone on file for Dr. Hayes is (626) 397-2618.
What is Dr. Chelsea A. Hayes' medical license number?
Dr. Hayes holds Colorado license DR.0066430, one of the licenses on file in 2 states.
Which states has Dr. Chelsea A. Hayes been licensed in?
Dmand AI has state licenses on file for Dr. Hayes in Colorado and California.
Which hospitals is Dr. Chelsea A. Hayes affiliated with?
Dr. Hayes is affiliated with Huntington Hospital. Dmand AI links Dr. Hayes to 2 more hospitals.
What medical group is Dr. Chelsea A. Hayes part of?
Dr. Hayes is linked to Cedars-Sinai Medical Group. Dmand AI links Dr. Hayes to 1 more medical group.
Does Dr. Chelsea A. Hayes accept Medicare?
Yes. CMS data shows Dr. Hayes billed Medicare for 659 services in 2021.
What services does Dr. Chelsea A. Hayes bill to Medicare?
In 2021, Dr. Hayes' most billed Medicare services were lab and pathology test (80502), lab and pathology test (86077) and surgery: heart and blood vessels (36514).
Has Dr. Chelsea A. Hayes received payments from drug or device companies?
CMS Open Payments shows $32 in general payments to Dr. Hayes from 1 company from 2024 to 2024. The largest total came from Immucor, Inc.
How long has Dr. Chelsea A. Hayes been practicing?
Dr. Hayes graduated from medical school in 2011, 15 years ago.
Selling to hematology practices?
See hematology (pathology) physicians in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card