Ellen Sierra, PA
- Medicare patients, 2024
- 428
- Part D claims, 2024
- 569
- MIPS score, 2024
- 86
- Hospital affiliations
- 1
- Medical groups
- 2
- Practice address
- 3276 Hempstead Turnpike, Levittown, NY 11756
- Practice phone
- Call (516) 783-4600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Citymd Urgent Care
Levittown, New York
Find Ellen Sierra'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.
Ellen Sierra is a physician assistant in Levittown, New York
Ellen Sierra practices at Citymd Urgent Care in Levittown, New York.
Ellen Sierra's NPI, 1790761732, was assigned on December 21, 2005. Ellen Sierra holds New York license 009114-1.
- NPI
- 1790761732NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082690821
- NPI enumeration date
- December 21, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (516) 783-4600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Ellen Sierra practices at Citymd Urgent Care in Levittown, New York
Ellen Sierra's primary practice is Citymd Urgent Care, at 3276 Hempstead Turnpike, Levittown, NY 11756 in Nassau County. The practice phone is (516) 783-4600.
- Citymd Urgent Care3276 Hempstead Turnpike, Levittown, NY 11756 · Nassau CountyPhone(516) 783-4600
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Ellen Sierra is affiliated with 2 sites of care and 2 medical groups
Ellen Sierra's primary practice is Citymd Urgent Care in Levittown, New York. Ellen Sierra is also affiliated with Mount Sinai South Nassau. The medical group on file is CityMD. Dmand AI also links Ellen Sierra to 1 more medical group, 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 Ellen Sierra's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Ellen Sierra practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Citymd Urgent Care | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Ellen Sierra is one of 11,456 physician assistants in New York
Physician assistant is Ellen Sierra's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Ellen Sierra is licensed in New York.
Specialties and state licenses
- Physician assistant, New YorkPrimary
Physician assistants near Ellen Sierra
Counts of physician assistants 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
Ellen Sierra treated 428 Medicare patients in 2024, average age 74
CMS counts 428 Medicare patients who saw Ellen Sierra in 2024. The largest group is 65 to 74, with 198 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.11, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Ellen Sierra's median patient age at 36, with 67% women.
Ellen Sierra's Medicare patients by age, 2024
Ellen Sierra's Medicare patients by sex, 2024
- Women25961%
- Men16939%
Chronic conditions among Ellen Sierra's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Diabetes34%
- Ischemic heart disease34%
- Anxiety25%
- Mood disorders22%
- Chronic kidney disease19%
Share of Medicare patients with each condition. A patient can have several.
Ellen Sierra's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 36
Patient panel by sex, all payers
- Women67%
- Men31%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Ellen Sierra wrote 569 Medicare Part D claims in 2024
In 2024, Ellen Sierra wrote 569 Medicare Part D claims for 470 patients. 87% of them were for generic drugs.
Ellen Sierra's Part D claims by kind of drug, 2024
- Generic496 claims87%
- Brand-name55 claims10%
- Other18 claims3%
Drug classes CMS tracks in Ellen Sierra's Part D claims, 2024
- Antibiotics48%273 of 569 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Ellen Sierra scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Ellen Sierra for performance year 2024, reported as part of a group. Ellen Sierra accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Ellen Sierra's MIPS scores, performance year 2024
- 86of 100Final score
- 82.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 72of 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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Sources for Ellen Sierra'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 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 (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) |
| 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 Ellen Sierra
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Ellen Sierra's NPI number?
Ellen Sierra's NPI number is 1790761732. It was assigned on December 21, 2005, and it is active in the NPI Registry.
What does Ellen Sierra specialize in?
Ellen Sierra is a physician assistant in Levittown, New York. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Ellen Sierra practice?
Ellen Sierra practices at 3276 Hempstead Turnpike, Levittown, NY 11756. Ellen Sierra's primary practice is Citymd Urgent Care in Levittown, New York. Dmand AI also links Ellen Sierra to 1 medical group.
What is Ellen Sierra's office phone number?
The practice phone on file for Ellen Sierra is (516) 783-4600.
What is Ellen Sierra's medical license number?
Ellen Sierra holds New York license 009114-1.
Which hospitals is Ellen Sierra affiliated with?
Ellen Sierra is affiliated with Mount Sinai South Nassau.
What medical group is Ellen Sierra part of?
Ellen Sierra is linked to CityMD. Dmand AI links Ellen Sierra to 1 more medical group.
Does Ellen Sierra accept Medicare?
Yes. CMS lists Ellen Sierra as accepting Medicare assignment.
What is Ellen Sierra's MIPS score?
Ellen Sierra's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
How many Medicare patients does Ellen Sierra see?
CMS counts 428 Medicare patients who saw Ellen Sierra in 2024, with an average age of 74.
How long has Ellen Sierra been practicing?
Ellen Sierra graduated from medical school in 2002, 24 years ago.
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