ArthroscopyEquipment Failure AnalysisProsthesis Failure
Dr. David Jeremy Hergan, MD
NPI1912065970PAC ID7810042330
- Medicare services, 2024
- 5,552
- Medicare patients, 2024
- 206
- Part D claims, 2024
- 151
- Publications
- 2
- MIPS score, 2024
- 84
- Practice address
- 5 High Ridge Park, Stamford, CT 06905
- Practice phone
- Call (203) 869-1145
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Orthopaedic & Neurosurgery Specialists
Stamford, Connecticut
Find Dr. Hergan'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. David Jeremy Hergan is an orthopedic surgeon in Stamford, Connecticut
Dr. Hergan practices at Orthopaedic & Neurosurgery Specialists in Stamford, Connecticut.
Dr. Hergan's NPI, 1912065970, was assigned on December 4, 2006. Dr. Hergan graduated from Chicago College of Medicine and Surgery in 2003. Dr. Hergan holds Wisconsin license 47238-020.
NPI and contact details
- NPI
- 1912065970NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7810042330
- NPI enumeration date
- December 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 869-1145
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Jeremy Hergan practices at Orthopaedic & Neurosurgery Specialists in Stamford, Connecticut
Dr. Hergan's primary practice is Orthopaedic & Neurosurgery Specialists, at 5 High Ridge Park, Stamford, CT 06905 in Western Ct County. The practice phone is (203) 869-1145.
- Orthopaedic & Neurosurgery Specialists5 High Ridge Park, Stamford, CT 06905 · Western Ct CountyPhone(203) 869-1145
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. David Jeremy Hergan is affiliated with 5 sites of care and 2 medical groups
Dr. Hergan's primary practice is Orthopaedic & Neurosurgery Specialists in Stamford, Connecticut. Dr. Hergan is also affiliated with Middlesex Hospital. The medical group on file is Orthopaedic and Neurosurgery Specialists. Dmand AI also links Dr. Hergan to 2 more group practices and clinics, 1 home health agency and 1 medical group, each named with a free account.
Orthopaedic & Neurosurgery SpecialistsPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. David Jeremy Hergan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hergan practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Orthopaedic & Neurosurgery Specialists | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Jeremy Hergan is one of 300 orthopedic surgeons in Connecticut
Orthopaedic surgery is Dr. Hergan's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Hergan is licensed in Wisconsin.
Specialties and state licenses
- Orthopaedic surgery, WisconsinPrimary
Orthopedic surgeons near Dr. Hergan
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. David Jeremy Hergan billed Medicare for 5,552 services in 2024
CMS data shows 5,552 Medicare services from Dr. Hergan across 13 procedure codes in 2024, for 206 Medicare patients. Medicare paid $37,890 for them. Every service was in an office.
Medicare services, 20245,552
Medicare patients206
Paid by Medicare$37,890
Procedure codes13
Dr. Hergan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 732024: 4,9806722%
- Imaging
- 2023: 2072024: 26428%
- Office and hospital visits
- 2023: 2192024: 2399%
- Surgery
- 2023: 542024: 6928%
Dr. Hergan compared with the Connecticut median for orthopedic surgeons, 2024
- Dr. Hergan
- Connecticut median
- Medicare services
- 5,552vs 8646.4 times
- Medicare patients
- 206vs 207Close to median
- Part D claims
- 134vs 12210% above
Medians across 297 orthopedic surgeons in Connecticut with Dmand AI profiles that report each measure.
Dr. Hergan'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. Hergan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hergan and other orthopedic surgeons in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Jeremy Hergan treated 206 Medicare patients in 2024, average age 76
CMS counts 206 Medicare patients who saw Dr. Hergan in 2024. The largest group is 75 to 84, with 87 patients. 75% of them have arthritis, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 0.96, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hergan's median patient age at 68, with 56% women.
Medicare patients, 2024206
Average age76
Average risk score0.96
Also on Medicaid12%
Dr. Hergan's Medicare patients by age, 2024
Dr. Hergan's Medicare patients by sex, 2024
- Women14068%
- Men6632%
Chronic conditions among Dr. Hergan's Medicare patients, 2024
- Arthritis75%
- High cholesterol75%
- High blood pressure74%
- Anxiety37%
- Mood disorders27%
- Ischemic heart disease26%
- Depression21%
- Atrial fibrillation19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hergan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women56%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Jeremy Hergan wrote 151 Medicare Part D claims in 2024
In 2024, Dr. Hergan wrote 151 Medicare Part D claims for 91 patients. 100% of them were for generic drugs. CMS names the drug for 134 of them, across 5 drugs with 11 or more claims each, at $1,060 in total drug cost. In 2023, CMS named 64 claims across 3 drugs.
Part D claims, 2024151
Drugs named by CMS5
Total drug cost$1,060
Part D patients91
Dr. Hergan's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Hergan's Part D claims, 2024
- Antibiotics23%35 of 151 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 642024: 134109%
Drugs named by CMS: 5 in 2024, 3 in 2023.
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. David Jeremy Hergan scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Hergan for performance year 2024, reported as part of a group. Dr. Hergan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 16 procedures of upper limb (arm) arthroscopy (minimally invasive joint repair) by Dr. Hergan, more than 56% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Hergan's MIPS scores, performance year 2024
- 84of 100Final score
- 82.6of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 65of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Hergan ranks in Medicare procedure volume
- Upper limb (arm) arthroscopy (minimally invasive joint repair)
- 56th percentile16 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Hip replacement: 1 to 10 procedures (CMS shows small counts as a range)
Knee replacement: 1 to 10 procedures (CMS shows small counts as a range)
Lower limb (leg) 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. David Jeremy Hergan has 2 publications on record
Dmand AI links 2 papers to Dr. Hergan in 2011. Dr. Hergan's most frequent co-authors are David C. Thut, MD, Alex G. Dukas, MD and Laith Jazrawi, MD.
Papers2
Dr. Hergan's most frequent co-authors
Recent publications by Dr. Hergan
Bull NYU Hosp Jt Dis
Biomechanical PhenomenaJoint DislocationsJoint Instability
See who Dr. Hergan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hergan works with, so you can find a warm path to the right orthopedic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David Jeremy Hergan received $6,437 in industry payments from 2016 to 2025
CMS Open Payments shows 121 general payments to Dr. Hergan from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 55% of the total. Shoulder Innovations, Inc. paid the most, $2,551.
General payments to Dr. Hergan by program year, 2016 to 2025
General payments to Dr. Hergan by kind, 2016 to 2025
$6.4Kin total
- Food and beverage$3,57155%
- Travel and lodging$2,82744%
- Gifts$391%
Companies that paid Dr. Hergan 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. David Jeremy Hergan graduated from Chicago College of Medicine and Surgery
Dr. Hergan graduated from Chicago College of Medicine and Surgery in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David Jeremy Hergan'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. David Jeremy Hergan
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. David Jeremy Hergan's NPI number?
Dr. David Jeremy Hergan's NPI number is 1912065970. It was assigned on December 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David Jeremy Hergan?
Dr. David Jeremy Hergan is an orthopedic surgeon in Stamford, Connecticut. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. David Jeremy Hergan practice?
Dr. Hergan practices at 5 High Ridge Park, Stamford, CT 06905. Dr. Hergan's primary practice is Orthopaedic & Neurosurgery Specialists in Stamford, Connecticut. Dmand AI also links Dr. Hergan to 2 group practices and clinics, 1 home health agency and 1 medical group.
What is Dr. David Jeremy Hergan's office phone number?
The practice phone on file for Dr. Hergan is (203) 869-1145.
What is Dr. David Jeremy Hergan's medical license number?
Dr. Hergan holds Wisconsin license 47238-020.
Which hospitals is Dr. David Jeremy Hergan affiliated with?
Dr. Hergan is affiliated with Middlesex Hospital.
What medical group is Dr. David Jeremy Hergan part of?
Dr. Hergan is linked to Orthopaedic and Neurosurgery Specialists. Dmand AI links Dr. Hergan to 1 more medical group.
Does Dr. David Jeremy Hergan accept Medicare?
Yes. CMS data shows Dr. Hergan billed Medicare for 5,552 services in 2024, and Dr. Hergan accepts Medicare assignment.
What is Dr. David Jeremy Hergan's MIPS score?
Dr. Hergan's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
How many Medicare patients does Dr. David Jeremy Hergan see?
CMS counts 206 Medicare patients who saw Dr. Hergan in 2024, with an average age of 76.
Show 7 more questionsShow fewer questions
What services does Dr. David Jeremy Hergan bill to Medicare?
In 2024, Dr. Hergan's most billed Medicare services were injected or infused drug (J1010), injected or infused drug (J7318) and office visit, established patient (99213).
Where did Dr. David Jeremy Hergan go to medical school?
Dr. Hergan graduated from Chicago College of Medicine and Surgery in 2003.
What drugs does Dr. David Jeremy Hergan prescribe most?
In 2024 Medicare Part D data, Dr. Hergan's most prescribed drugs by claims were Meloxicam, Amoxicillin and Diclofenac Sodium.
Has Dr. David Jeremy Hergan received payments from drug or device companies?
CMS Open Payments shows $6,437 in general payments to Dr. Hergan from 22 companies from 2016 to 2025. The largest total came from Shoulder Innovations, Inc.
How long has Dr. David Jeremy Hergan been practicing?
Dr. Hergan graduated from medical school in 2003, 23 years ago.
Does Dr. David Jeremy Hergan do research?
Dmand AI links 2 publications to Dr. Hergan.
Who does Dr. David Jeremy Hergan publish with?
Dr. Hergan's most frequent co-authors are David C. Thut, MD (2 shared papers), Alex G. Dukas, MD (1 shared paper) and Laith Jazrawi, MD (1 shared paper).
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