Dr. Terrence C. Hack, FACC, MD
- Medicare services, 2023
- 66
- Medicare patients, 2024
- 28
- Part D claims, 2024
- 4,721
- Hospital affiliations
- 2
- Industry payments
- $316
- Practice address
- 950 Circle Dr, Salinas, CA 93905
- Practice phone
- Call (831) 757-6237
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
CSVS - CIRCLE CLINIC
FQHC - Satellite Clinic · Salinas, California
Find Dr. Hack'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. Terrence C. Hack is an internist in Salinas, California
Dr. Hack practices at CSVS - CIRCLE CLINIC in Salinas, California.
Dr. Hack's NPI, 1760431274, was assigned on May 10, 2006. Dr. Hack graduated from UCSF School of Medicine in 1978. Dr. Hack holds California license G50146.
- NPI
- 1760431274NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1052386802
- NPI enumeration date
- May 10, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (831) 757-6237
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Terrence C. Hack practices at CSVS - CIRCLE CLINIC in Salinas, California
Dr. Hack's primary practice is CSVS - CIRCLE CLINIC, at 950 Circle Dr, Salinas, CA 93905 in Monterey County. The practice phone is (831) 757-6237.
- CSVS - CIRCLE CLINIC950 Circle Dr, Salinas, CA 93905 · Monterey CountyPhone(831) 757-6237
Source: Dmand AI Affiliation Data
Dr. Terrence C. Hack is affiliated with 7 sites of care and 1 medical group
Dr. Hack's primary practice is CSVS - CIRCLE CLINIC in Salinas, California. Dr. Hack is also affiliated with Salinas Valley Health Medical Center. The medical group on file is Clinica de Salud del Valle de Salinas. Dmand AI also links Dr. Hack to 1 more hospital, 3 home health agencies and 1 community health center, each named with a free account. Dr. Hack's employer is on file too: a community health center (fqhc).
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Terrence C. Hack's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hack practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CSVS - CIRCLE CLINIC | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Terrence C. Hack is one of 16,751 internists in California
Internal medicine is Dr. Hack's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Hack is board certified in cardiovascular disease by the American Board of Internal Medicine. Dmand AI has Dr. Hack's licenses on file in 3 states: California, Massachusetts and Connecticut.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Massachusetts license
- Connecticut license
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, acute kidney failure, acute skin infection, adjustment disease, aneurysm, anxiety and arthritis among the conditions Dr. Hack treats.
Internists near Dr. Hack
Counts of internists 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. Terrence C. Hack billed Medicare for 66 services in 2023
CMS data shows 66 Medicare services from Dr. Hack across 3 procedure codes in 2023, for 28 Medicare patients. Medicare paid $276 for them. Every service was in an office.
Dr. Hack's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Lab and pathology
- 2022: 662023: 5418%
- Tests and treatments
- 2022: 02023: 12
Dr. Hack compared with the California median for internists, 2023
- Dr. Hack
- California median
- Medicare services
- 66vs 36182% below
- Medicare patients
- 28vs 15181% below
- Part D claims
- 4,232vs 42110.1 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Hack's most billed Medicare procedure codes, 2023
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. Hack?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hack and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Terrence C. Hack treated 28 Medicare patients in 2024, average age 70
CMS counts 28 Medicare patients who saw Dr. Hack in 2024. The largest group is 65 to 74, with 17 patients. 75% of them have diabetes, and 75% have high blood pressure. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hack's median patient age at 48, with 58% women.
Dr. Hack's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Hack's Medicare patients by sex, 2024
- Women1761%
- Men1139%
Chronic conditions among Dr. Hack's Medicare patients, 2024
- Diabetes75%
- High blood pressure75%
- High cholesterol71%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hack's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 48
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Terrence C. Hack wrote 4,721 Medicare Part D claims in 2024
In 2024, Dr. Hack wrote 4,721 Medicare Part D claims for 385 patients. 87% of them were for generic drugs. CMS names the drug for 4,232 of them, across 62 drugs with 11 or more claims each, at $378,671 in total drug cost. In 2023, CMS named 3,978 claims across 61 drugs.
Dr. Hack's Part D claims by kind of drug, 2024
- Generic4,127 claims87%
- Brand-name550 claims12%
- Other44 claims1%
Dr. Hack'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. Hack's Part D claims, 2024
- Antibiotics1%64 of 4,721 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: 3,9782024: 4,2326%
Drugs named by CMS: 62 in 2024, 61 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
How Dr. Terrence C. Hack takes part in Medicare
Dr. Hack accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Terrence C. Hack received $316 in industry payments from 2018 to 2024
CMS Open Payments shows 5 general payments to Dr. Hack from 3 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $209.
General payments to Dr. Hack by program year, 2018 to 2024
Companies that paid Dr. Hack the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Terrence C. Hack graduated from UCSF School of Medicine
Dr. Hack graduated from UCSF School of Medicine in 1978.
- Medical school
- Board certified in cardiovascular disease
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Terrence C. Hack accepts plans from 1 insurance carrier
Dr. Hack is in network with 1 carrier, including Aetna. POS plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Aetna
Plan types Dr. Hack accepts, by number of carriers
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Terrence C. Hack'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 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) |
| 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. Terrence C. Hack
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. Terrence C. Hack's NPI number?
Dr. Terrence C. Hack's NPI number is 1760431274. It was assigned on May 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Terrence C. Hack?
Dr. Terrence C. Hack is an internist in Salinas, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Terrence C. Hack practice?
Dr. Hack practices at 950 Circle Dr, Salinas, CA 93905. Dr. Hack's primary practice is CSVS - CIRCLE CLINIC in Salinas, California. Dmand AI also links Dr. Hack to 1 hospital, 3 home health agencies and 1 community health center.
What is Dr. Terrence C. Hack's office phone number?
The practice phone on file for Dr. Hack is (831) 757-6237.
What is Dr. Terrence C. Hack's medical license number?
Dr. Hack holds California license G50146, one of the licenses on file in 3 states.
Which states has Dr. Terrence C. Hack been licensed in?
Dmand AI has state licenses on file for Dr. Hack in California (1983 to 2026), Massachusetts (1981 to 2025) and Connecticut (1980 to 1983).
Which hospitals is Dr. Terrence C. Hack affiliated with?
Dr. Hack is affiliated with Salinas Valley Health Medical Center. Dmand AI links Dr. Hack to 1 more hospital.
What medical group is Dr. Terrence C. Hack part of?
Dr. Hack is linked to Clinica de Salud del Valle de Salinas.
Does Dr. Terrence C. Hack accept Medicare?
Yes. CMS data shows Dr. Hack billed Medicare for 66 services in 2023, and Dr. Hack accepts Medicare assignment.
How many Medicare patients does Dr. Terrence C. Hack see?
CMS counts 28 Medicare patients who saw Dr. Hack in 2024, with an average age of 70.
Show 7 more questionsShow fewer questions
Is Dr. Terrence C. Hack board certified?
Yes. Dr. Hack is board certified in cardiovascular disease by the American Board of Internal Medicine.
What services does Dr. Terrence C. Hack bill to Medicare?
In 2023, Dr. Hack's most billed Medicare services were lab and pathology test (82947), lab and pathology test (81002) and heart test or procedure (93000).
Where did Dr. Terrence C. Hack go to medical school?
Dr. Hack graduated from UCSF School of Medicine in 1978.
What drugs does Dr. Terrence C. Hack prescribe most?
In 2024 Medicare Part D data, Dr. Hack's most prescribed drugs by claims were Metformin HCl, Atorvastatin Calcium and Lisinopril.
Has Dr. Terrence C. Hack received payments from drug or device companies?
CMS Open Payments shows $316 in general payments to Dr. Hack from 3 companies from 2018 to 2024. The largest total came from Abbvie Inc.
How long has Dr. Terrence C. Hack been practicing?
Dr. Hack graduated from medical school in 1978, 48 years ago.
What insurance does Dr. Terrence C. Hack accept?
Dr. Hack is in network with 1 carrier, including Aetna. POS plans come from the most carriers, 1. Check the plan with the practice before a visit.
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