Dr. Jillian Sara Gruber, MD
- Medicare services, 2024
- 150
- Medicare patients, 2024
- 111
- Part D claims, 2024
- 29
- MIPS score, 2024
- 91
- Hospital affiliations
- 1
- Practice address
- 1493 Cambridge Street, Cambridge, MA 02139
- Practice phone
- Call (617) 665-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gruber's professional email, personal email and mobile number
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Dr. Jillian Sara Gruber is an orthopedic surgeon in Cambridge, Massachusetts
Dr. Gruber practices at CHA Cambridge Hospital in Cambridge, Massachusetts, part of Cambridge Health Alliance.
Dr. Gruber's NPI, 1538699772, was assigned on June 19, 2017. Dr. Gruber graduated from University of Rochester School of Medicine and Dentistry in 2017. Dr. Gruber holds Massachusetts license 271228.
- NPI
- 1538699772NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143593806
- NPI enumeration date
- June 19, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 665-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jillian Sara Gruber practices at CHA Cambridge Hospital in Cambridge, Massachusetts
Dr. Gruber's primary practice is CHA Cambridge Hospital, at 1493 Cambridge Street, Cambridge, MA 02139 in Middlesex County. The practice phone is (617) 665-1000.
- CHA Cambridge Hospital1493 Cambridge Street, Cambridge, MA 02139 · Middlesex CountyPhone(617) 665-1000
Source: Dmand AI Affiliation Data
Dr. Jillian Sara Gruber is affiliated with 1 site of care and 1 medical group
Dr. Gruber's primary practice is CHA Cambridge Hospital in Cambridge, Massachusetts, part of Cambridge Health Alliance. The medical group on file is Cambridge Health Alliance. Dr. Gruber's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jillian Sara Gruber's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gruber practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CHA Cambridge Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jillian Sara Gruber is one of 593 orthopedic surgeons in Massachusetts
Orthopaedic surgery is Dr. Gruber's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Gruber is licensed in Massachusetts.
Specialties and state licenses
- Orthopaedic surgery, MassachusettsPrimary
Orthopedic surgeons near Dr. Gruber
Counts of orthopedic surgeons 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. Jillian Sara Gruber billed Medicare for 150 services in 2024
CMS data shows 150 Medicare services from Dr. Gruber across 4 procedure codes in 2024, for 111 Medicare patients. Medicare paid $8,388 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Gruber's Medicare services by type, 2024
- Office and hospital visits129
- Surgery21
Dr. Gruber compared with the Massachusetts median for orthopedic surgeons, 2024
- Dr. Gruber
- Massachusetts median
- Medicare services
- 150vs 67278% below
- Medicare patients
- 111vs 30263% below
- Part D claims
- 22vs 5056% below
Medians across 543 orthopedic surgeons in Massachusetts with Dmand AI profiles that report each measure.
Dr. Gruber'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.
Need commercial claims for Dr. Gruber?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gruber and other orthopedic surgeons in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jillian Sara Gruber treated 111 Medicare patients in 2024, average age 70
CMS counts 111 Medicare patients who saw Dr. Gruber in 2024. The largest group is 65 to 74, with 49 patients. 59% of them have arthritis, and 59% have high blood pressure. 55% are also on Medicaid. Their average risk score is 1.12, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Gruber's median patient age at 46, with 53% women.
Dr. Gruber's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Gruber's Medicare patients by sex, 2024
- Women7769%
- Men3431%
Chronic conditions among Dr. Gruber's Medicare patients, 2024
- Arthritis59%
- High blood pressure59%
- High cholesterol58%
- Mood disorders39%
- Depression34%
- Anxiety31%
- Diabetes29%
- Chronic kidney disease26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gruber's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jillian Sara Gruber wrote 29 Medicare Part D claims in 2024
In 2024, Dr. Gruber wrote 29 Medicare Part D claims for 19 patients. 90% of them were for generic drugs. CMS names the drug for 22 of them, across 1 drug with 11 or more claims each, at $126 in total drug cost. In 2021, CMS named 15 claims across 1 drug.
Dr. Gruber's Part D claims by kind of drug, 2024
- Generic26 claims90%
- Brand-name and other3 claims10%
Dr. Gruber's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 152022: 2247%
Drugs named by CMS: 1 in 2022, 1 in 2021.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Jillian Sara Gruber scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Gruber for performance year 2024, reported as part of a group. Dr. Gruber accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Gruber's MIPS scores, performance year 2024
- 91of 100Final score
- 77.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Hip replacement: 1 to 10 procedures (CMS shows small counts as a range)
Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)
Upper limb (arm) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Jillian Sara Gruber received $4,285 in industry payments from 2021 to 2025
CMS Open Payments shows 33 general payments to Dr. Gruber from 12 drug and device companies from 2021 to 2025. Education make up the largest share, 65% of the total. Kairos Surgical Inc paid the most, $2,444.
General payments to Dr. Gruber by program year, 2021 to 2025
General payments to Dr. Gruber by kind, 2021 to 2025
- Education$2,80065%
- Food and beverage$1,48535%
Companies that paid Dr. Gruber the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jillian Sara Gruber graduated from University of Rochester School of Medicine and Dentistry
Dr. Gruber graduated from University of Rochester School of Medicine and Dentistry in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jillian Sara Gruber'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 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) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)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)Doctors and Clinicians Utilization Data (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 Dr. Jillian Sara Gruber
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. Jillian Sara Gruber's NPI number?
Dr. Jillian Sara Gruber's NPI number is 1538699772. It was assigned on June 19, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Jillian Sara Gruber?
Dr. Jillian Sara Gruber is an orthopedic surgeon in Cambridge, Massachusetts. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Jillian Sara Gruber practice?
Dr. Gruber practices at 1493 Cambridge Street, Cambridge, MA 02139. Dr. Gruber's primary practice is CHA Cambridge Hospital in Cambridge, Massachusetts, part of Cambridge Health Alliance.
What is Dr. Jillian Sara Gruber's office phone number?
The practice phone on file for Dr. Gruber is (617) 665-1000.
What is Dr. Jillian Sara Gruber's medical license number?
Dr. Gruber holds Massachusetts license 271228.
Which hospitals is Dr. Jillian Sara Gruber affiliated with?
Dr. Gruber practices at CHA Cambridge Hospital in Cambridge, Massachusetts.
What medical group is Dr. Jillian Sara Gruber part of?
Dr. Gruber is linked to Cambridge Health Alliance.
Does Dr. Jillian Sara Gruber accept Medicare?
Yes. CMS data shows Dr. Gruber billed Medicare for 150 services in 2024, and Dr. Gruber accepts Medicare assignment.
What is Dr. Jillian Sara Gruber's MIPS score?
Dr. Gruber's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
How many Medicare patients does Dr. Jillian Sara Gruber see?
CMS counts 111 Medicare patients who saw Dr. Gruber in 2024, with an average age of 70.
Show 5 more questionsShow fewer questions
What services does Dr. Jillian Sara Gruber bill to Medicare?
In 2024, Dr. Gruber's most billed Medicare services were office visit, established patient (99213), office visit, new patient (99203) and surgery: bones and joints (20550).
Where did Dr. Jillian Sara Gruber go to medical school?
Dr. Gruber graduated from University of Rochester School of Medicine and Dentistry in 2017.
What drugs does Dr. Jillian Sara Gruber prescribe most?
In 2022 Medicare Part D data, Dr. Gruber's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Jillian Sara Gruber received payments from drug or device companies?
CMS Open Payments shows $4,285 in general payments to Dr. Gruber from 12 companies from 2021 to 2025. The largest total came from Kairos Surgical Inc.
How long has Dr. Jillian Sara Gruber been practicing?
Dr. Gruber graduated from medical school in 2017, 9 years ago.
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