Dr. Susanthi Gunadasa, MBBS, MD
- Medicare services, 2024
- 2,407
- Medicare patients, 2024
- 385
- Part D claims, 2024
- 8,561
- Hospital affiliations
- 3
- Industry payments
- $255
- Practice address
- 30 Prospect Ave, Hackensack, NJ 07601
- Practice phone
- Call (551) 996-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Gunadasa'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. Susanthi Gunadasa is an internist in Hackensack, New Jersey
Dr. Gunadasa practices at Hackensack University Medical Center in Hackensack, New Jersey, part of Hackensack Meridian Health.
Dr. Gunadasa's NPI, 1639331861, was assigned on June 29, 2008. Dr. Gunadasa graduated from Other in 2005. Dr. Gunadasa holds New Jersey license 25MA09346600.
- NPI
- 1639331861NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143467456
- NPI enumeration date
- June 29, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (551) 996-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 47
- Medical school graduation
- 2005
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Susanthi Gunadasa practices at Hackensack University Medical Center in Hackensack, New Jersey
Dr. Gunadasa's primary practice is Hackensack University Medical Center, at 30 Prospect Ave, Hackensack, NJ 07601 in Bergen County. The practice phone is (551) 996-2000.
- Hackensack University Medical Center30 Prospect Ave, Hackensack, NJ 07601 · Bergen CountyPhone(551) 996-2000
Source: Dmand AI Affiliation Data
Dr. Susanthi Gunadasa is affiliated with 13 sites of care and 3 medical groups
Dr. Gunadasa's primary practice is Hackensack University Medical Center in Hackensack, New Jersey, part of Hackensack Meridian Health. Dr. Gunadasa is also affiliated with The Valley Hospital. The medical group on file is Hackensack Meridian Medical Group. Dmand AI also links Dr. Gunadasa to 1 more hospital, 4 skilled nursing facilities, 3 hospices, 2 home health agencies, 2 medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Susanthi Gunadasa's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gunadasa practices, 13 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hackensack University Medical Center | Available with a free account |
| +12 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Hackensack Meridian Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Susanthi Gunadasa is one of 4,226 internists in New Jersey
Internal medicine is Dr. Gunadasa's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Gunadasa is board certified in geriatric medicine by the American Board of Internal Medicine. Dmand AI has Dr. Gunadasa's licenses on file in 2 states: New Jersey and New York.
Specialties and state licenses
- Internal medicine, New JerseyPrimary
- New York license
Clinical focus
Dmand AI lists acute sinusitis, acute skin infection, alzheimer's disease, atrial fibrillation and flutter, bipolar disorder, cellulitis, cerebrovascular disease and chronic anemia among the conditions Dr. Gunadasa treats.
Internists near Dr. Gunadasa
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. Susanthi Gunadasa billed Medicare for 2,407 services in 2024
CMS data shows 2,407 Medicare services from Dr. Gunadasa across 17 procedure codes in 2024, for 385 Medicare patients. Medicare paid $230,324 for them.
Dr. Gunadasa's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2,5032024: 2,3078%
- Other services
- 2023: 792024: 10027%
Where Dr. Gunadasa's Medicare services took place, 2024
- In an office51421%
- In a facility1,89379%
Dr. Gunadasa compared with the New Jersey median for internists, 2024
- Dr. Gunadasa
- New Jersey median
- Medicare services
- 2,407vs 7233.3 times
- Medicare patients
- 385vs 23167% above
- Part D claims
- 7,788vs 8309.4 times
Medians across 4,086 internists in New Jersey with Dmand AI profiles that report each measure.
Dr. Gunadasa'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. Gunadasa?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gunadasa and other internists in New Jersey.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Susanthi Gunadasa treated 385 Medicare patients in 2024, average age 81
CMS counts 385 Medicare patients who saw Dr. Gunadasa in 2024. The largest group is 85 and over, with 161 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 2.50, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Gunadasa's median patient age at 76, with 50% women.
Dr. Gunadasa's Medicare patients by age, 2024
Dr. Gunadasa's Medicare patients by sex, 2024
- Women22959%
- Men15641%
Chronic conditions among Dr. Gunadasa's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Mood disorders55%
- Arthritis54%
- Ischemic heart disease54%
- Alzheimer's and dementia53%
- Anxiety49%
- Diabetes49%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gunadasa's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women50%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Susanthi Gunadasa wrote 8,561 Medicare Part D claims in 2024
In 2024, Dr. Gunadasa wrote 8,561 Medicare Part D claims for 346 patients. 90% of them were for generic drugs. CMS names the drug for 7,788 of them, across 128 drugs with 11 or more claims each, at $421,476 in total drug cost. In 2023, CMS named 7,847 claims across 123 drugs.
Dr. Gunadasa's Part D claims by kind of drug, 2024
- Generic7,743 claims90%
- Brand-name797 claims9%
- Other21 claims0%
Dr. Gunadasa'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. Gunadasa's Part D claims, 2024
- Opioids1%44 of 8,561 claims
- Antibiotics2%206 of 8,561 claims
- Antipsychotics, patients 65 and over4%371 of 8,561 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: 7,8472024: 7,7881%
Drugs named by CMS: 128 in 2024, 123 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. Susanthi Gunadasa takes part in Medicare
Dr. Gunadasa 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. Susanthi Gunadasa received $255 in industry payments from 2018 to 2025
CMS Open Payments shows 16 general payments to Dr. Gunadasa from 9 drug and device companies from 2018 to 2025. Food and beverage make up the largest share, 100% of the total. Otsuka America Pharmaceutical, Inc. paid the most, $117.
General payments to Dr. Gunadasa by program year, 2018 to 2025
Companies that paid Dr. Gunadasa the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Susanthi Gunadasa has 1 award and honors on record
Dmand AI lists 1 award for Dr. Gunadasa, most recently Top doctors in 2023.
Awards and honors for Dr. Gunadasa
- 2023
- Top doctors
Source: Dmand AI Professional Profile Data
Dr. Susanthi Gunadasa graduated from Other
Dr. Gunadasa graduated from Other in 2005.
- Medical school
- Board certified in geriatric medicine
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Susanthi Gunadasa accepts plans from 9 insurance carriers
Dr. Gunadasa is in network with 9 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- Blue Cross Blue Shield of Michigan
- Horizon Blue Cross Blue Shield of New Jersey
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- +1 more carriersWith a free account
Plan types Dr. Gunadasa accepts, by number of carriers
- Medicare9
- PPO8
- HMO5
- EPO2
- POS2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Susanthi Gunadasa'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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Susanthi Gunadasa
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. Susanthi Gunadasa's NPI number?
Dr. Susanthi Gunadasa's NPI number is 1639331861. It was assigned on June 29, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Susanthi Gunadasa?
Dr. Susanthi Gunadasa is an internist in Hackensack, New Jersey. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Susanthi Gunadasa practice?
Dr. Gunadasa practices at 30 Prospect Ave, Hackensack, NJ 07601. Dr. Gunadasa's primary practice is Hackensack University Medical Center in Hackensack, New Jersey, part of Hackensack Meridian Health. Dmand AI also links Dr. Gunadasa to 1 hospital, 4 skilled nursing facilities, 3 hospices, 2 home health agencies, 2 medical groups and 1 group practice or clinic.
What is Dr. Susanthi Gunadasa's office phone number?
The practice phone on file for Dr. Gunadasa is (551) 996-2000.
What is Dr. Susanthi Gunadasa's medical license number?
Dr. Gunadasa holds New Jersey license 25MA09346600, one of the licenses on file in 2 states.
Which states has Dr. Susanthi Gunadasa been licensed in?
Dmand AI has state licenses on file for Dr. Gunadasa in New Jersey (2013 to 2027) and New York (2011 to 2026).
Which hospitals is Dr. Susanthi Gunadasa affiliated with?
Dr. Gunadasa practices at Hackensack University Medical Center in Hackensack, New Jersey. Dr. Gunadasa is also affiliated with The Valley Hospital. Dmand AI links Dr. Gunadasa to 1 more hospital.
What medical group is Dr. Susanthi Gunadasa part of?
Dr. Gunadasa is linked to Hackensack Meridian Medical Group. Dmand AI links Dr. Gunadasa to 2 more medical groups.
Does Dr. Susanthi Gunadasa accept Medicare?
Yes. CMS data shows Dr. Gunadasa billed Medicare for 2,407 services in 2024, and Dr. Gunadasa accepts Medicare assignment.
How many Medicare patients does Dr. Susanthi Gunadasa see?
CMS counts 385 Medicare patients who saw Dr. Gunadasa in 2024, with an average age of 81.
Show 7 more questionsShow fewer questions
Is Dr. Susanthi Gunadasa board certified?
Yes. Dr. Gunadasa is board certified in geriatric medicine by the American Board of Internal Medicine.
What services does Dr. Susanthi Gunadasa bill to Medicare?
In 2024, Dr. Gunadasa's most billed Medicare services were nursing facility care (99309), hospital inpatient care (99233) and home visit (99349).
Where did Dr. Susanthi Gunadasa go to medical school?
Dr. Gunadasa graduated from Other in 2005.
What drugs does Dr. Susanthi Gunadasa prescribe most?
In 2024 Medicare Part D data, Dr. Gunadasa's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Divalproex Sodium.
Has Dr. Susanthi Gunadasa received payments from drug or device companies?
CMS Open Payments shows $255 in general payments to Dr. Gunadasa from 9 companies from 2018 to 2025. The largest total came from Otsuka America Pharmaceutical, Inc.
How long has Dr. Susanthi Gunadasa been practicing?
Dr. Gunadasa graduated from medical school in 2005, 21 years ago.
What insurance does Dr. Susanthi Gunadasa accept?
Dr. Gunadasa is in network with 9 carriers, including Aetna, Elevance and United Healthcare. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
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