Hallie P. Grotenstein, PA-C
- Part D claims, 2024
- 15
- MIPS score, 2024
- 79
- Industry payments
- $22
- Affiliated sites
- 1
- Medical groups
- 2
- Practice address
- 100 E 77th St, New York, NY 10075
- Practice phone
- Call (212) 434-4355
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Lenox Hill Hospital
New York, New York
Find Hallie Grotenstein'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.
Hallie P. Grotenstein is a physician assistant in New York, New York
Hallie Grotenstein practices at Lenox Hill Hospital in New York, New York.
Hallie Grotenstein's NPI, 1265816722, was assigned on July 15, 2015. Hallie Grotenstein graduated from JS Weill Medical College, Cornell University in 2015. Hallie Grotenstein holds New York license 018721.
- NPI
- 1265816722NPI Registry (opens in a new tab)
- NPI enumeration date
- July 15, 2015
- NPI status
- Active
- Practice phone
- (212) 434-4355
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Hallie P. Grotenstein practices at Lenox Hill Hospital in New York, New York
Hallie Grotenstein's primary practice is Lenox Hill Hospital, at 100 E 77th St, New York, NY 10075 in New York County. The practice phone is (212) 434-4355.
- Lenox Hill Hospital100 E 77th St, New York, NY 10075 · New York CountyPhone(212) 434-4355
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Hallie P. Grotenstein is affiliated with 2 sites of care and 2 medical groups
Hallie Grotenstein's primary practice is Lenox Hill Hospital in New York, New York. The medical group on file is ColumbiaDoctors. Dmand AI also links Hallie Grotenstein to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Hallie P. Grotenstein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Hallie Grotenstein practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lenox Hill Hospital | 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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Hallie P. Grotenstein is one of 11,456 physician assistants in New York
Physician assistant is Hallie Grotenstein's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Hallie Grotenstein is licensed in New York.
Specialties and state licenses
- Physician assistant, New YorkPrimary
Physician assistants near Hallie Grotenstein
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
Hallie P. Grotenstein's patients have a median age of 80
Across all payers, Dmand AI patient panel data puts Hallie Grotenstein's median patient age at 80, with 71% women.
Hallie Grotenstein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 80
Patient panel by sex, all payers
- Women71%
- Men29%
Source: Dmand AI Patient Panel Data
Hallie P. Grotenstein wrote 15 Medicare Part D claims in 2024
In 2024, Hallie Grotenstein wrote 15 Medicare Part D claims. 87% of them were for generic drugs.
Hallie Grotenstein's Part D claims by kind of drug, 2024
- Generic13 claims87%
- Brand-name and other2 claims13%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Hallie P. Grotenstein scored 79 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 79 out of 100 for Hallie Grotenstein for performance year 2024, reported as part of a group.
Hallie Grotenstein's MIPS scores, performance year 2024
- 79of 100Final score
- 61.4of 100Quality
- 40of 100Improvement Activities
- 80of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Hallie P. Grotenstein received $22 in industry payments in 2025
CMS Open Payments shows 1 general payment to Hallie Grotenstein from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Argenx US, Inc. paid the most, $22.
Companies that paid Hallie Grotenstein the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Hallie P. Grotenstein graduated from JS Weill Medical College, Cornell University
Hallie Grotenstein graduated from JS Weill Medical College, Cornell University in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Hallie P. Grotenstein'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 Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (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 |
| 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 Hallie P. Grotenstein
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Hallie P. Grotenstein's NPI number?
Hallie P. Grotenstein's NPI number is 1265816722. It was assigned on July 15, 2015, and it is active in the NPI Registry.
What does Hallie P. Grotenstein specialize in?
Hallie P. Grotenstein is a physician assistant in New York, New York. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Hallie P. Grotenstein practice?
Hallie Grotenstein practices at 100 E 77th St, New York, NY 10075. Hallie Grotenstein's primary practice is Lenox Hill Hospital in New York, New York. Dmand AI also links Hallie Grotenstein to 1 group practice or clinic and 1 medical group.
What is Hallie P. Grotenstein's office phone number?
The practice phone on file for Hallie Grotenstein is (212) 434-4355.
What is Hallie P. Grotenstein's medical license number?
Hallie Grotenstein holds New York license 018721.
What medical group is Hallie P. Grotenstein part of?
Hallie Grotenstein is linked to ColumbiaDoctors. Dmand AI links Hallie Grotenstein to 1 more medical group.
What is Hallie P. Grotenstein's MIPS score?
Hallie Grotenstein's MIPS final score for performance year 2024 is 79 out of 100, reported as part of a group.
Where did Hallie P. Grotenstein go to medical school?
Hallie Grotenstein graduated from JS Weill Medical College, Cornell University in 2015.
Has Hallie P. Grotenstein received payments from drug or device companies?
CMS Open Payments shows $22 in general payments to Hallie Grotenstein from 1 company from 2025 to 2025. The largest total came from Argenx US, Inc.
How long has Hallie P. Grotenstein been practicing?
Hallie Grotenstein graduated from medical school in 2015, 11 years ago.
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