Dr. Marcella B. Hardart, MD
- Industry payments
- $2,802
- Insurance carriers
- 7
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 1450 10th St, Santa Monica, CA 90401
- Practice phone
- Call (310) 415-1714
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Tenth Street Pediatric Medical Group, Inc.
Santa Monica, California
Find Dr. Hardart'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. Marcella B. Hardart is a pediatrician in Santa Monica, California
Dr. Hardart practices at Tenth Street Pediatric Medical Group, Inc. in Santa Monica, California.
Dr. Hardart's NPI, 1265614341, was assigned on November 30, 2007. Dr. Hardart graduated from Keck School of Medicine of USC in 2004. Dr. Hardart's California license number on file is A93391.
- NPI
- 1265614341NPI Registry (opens in a new tab)
- NPI enumeration date
- November 30, 2007
- NPI status
- Active
- Practice phone
- (310) 415-1714
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Marcella B. Hardart practices at Tenth Street Pediatric Medical Group, Inc. in Santa Monica, California
Dr. Hardart's primary practice is Tenth Street Pediatric Medical Group, Inc., at 1450 10th St, Santa Monica, CA 90401 in Los Angeles County. The practice phone is (310) 415-1714.
- Tenth Street Pediatric Medical Group, Inc.1450 10th St, Santa Monica, CA 90401 · Los Angeles CountyPhone(310) 415-1714
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Marcella B. Hardart is affiliated with 1 site of care
Dr. Hardart's primary practice is Tenth Street Pediatric Medical Group, Inc. in Santa Monica, California.
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Marcella B. Hardart's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hardart practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tenth Street Pediatric Medical Group, Inc. | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marcella B. Hardart is one of 8,236 pediatricians in California
Pediatrics is Dr. Hardart's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Hardart is board certified in pediatrics by the American Board of Pediatrics. Dr. Hardart has a license on file in California.
Specialties and state licenses
- Pediatrics, CaliforniaPrimary
Pediatricians near Dr. Hardart
Counts of pediatricians 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. Marcella B. Hardart's patients have a median age of 14
Across all payers, Dmand AI patient panel data puts Dr. Hardart's median patient age at 14, with 58% women.
Dr. Hardart's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 14
Patient panel by sex, all payers
- Women58%
- Men42%
Source: Dmand AI Patient Panel Data
Dr. Marcella B. Hardart received $2,802 in industry payments from 2016 to 2025
CMS Open Payments shows 126 general payments to Dr. Hardart from 29 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $310.
General payments to Dr. Hardart by program year, 2016 to 2025
Companies that paid Dr. Hardart 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. Marcella B. Hardart graduated from Keck School of Medicine of USC
Dr. Hardart graduated from Keck School of Medicine of USC in 2004.
- Medical school
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Marcella B. Hardart accepts plans from 7 insurance carriers
Dr. Hardart is in network with 7 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- Elevance
- HCSC
Plan types Dr. Hardart accepts, by number of carriers
- PPO5
- POS4
- HMO3
- EPO2
- Medicare2
Source: Dmand AI Insurance Network Data
Sources for Dr. Marcella B. Hardart'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 Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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. Marcella B. Hardart
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. Marcella B. Hardart's NPI number?
Dr. Marcella B. Hardart's NPI number is 1265614341. It was assigned on November 30, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Marcella B. Hardart?
Dr. Marcella B. Hardart is a pediatrician in Santa Monica, California. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Marcella B. Hardart practice?
Dr. Hardart practices at 1450 10th St, Santa Monica, CA 90401. Dr. Hardart's primary practice is Tenth Street Pediatric Medical Group, Inc. in Santa Monica, California.
What is Dr. Marcella B. Hardart's office phone number?
The practice phone on file for Dr. Hardart is (310) 415-1714.
What is Dr. Marcella B. Hardart's medical license number?
Dr. Hardart's California license number on file is A93391.
Is Dr. Marcella B. Hardart board certified?
Yes. Dr. Hardart is board certified in pediatrics by the American Board of Pediatrics.
Where did Dr. Marcella B. Hardart go to medical school?
Dr. Hardart graduated from Keck School of Medicine of USC in 2004.
Has Dr. Marcella B. Hardart received payments from drug or device companies?
CMS Open Payments shows $2,802 in general payments to Dr. Hardart from 29 companies from 2016 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Marcella B. Hardart been practicing?
Dr. Hardart graduated from medical school in 2004, 22 years ago.
What insurance does Dr. Marcella B. Hardart accept?
Dr. Hardart is in network with 7 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 5. Check the plan with the practice before a visit.
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