Mark Zimmerman, MD
Psychiatry · Cranston, RINPI 1508842857
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (39.8%), speaking fees and travel and lodging — rather than concentrated in one kind of arrangement. 18 manufacturers reported payments, led by ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.) at 49.3% of the total. Among psychiatry clinicians in RI with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 237 payments — averaging $949.89 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.)$111K
- Otsuka Pharmaceutical Co., Ltd.$26K
- Amgen$20K
- Merck$20K
- Johnson & Johnson$9K
- Boehringer Ingelheim$9K
- plus $30K from 12 others
Across 1 payment — averaging $147,310 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Boehringer Ingelheim International GmbH$147K
What the payments were for
- Consulting fees$89,62740%
- Speaking & faculty fees$79,53335%
- Travel & lodging$50,74223%
- Food & beverage$5,2232%
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.) | 129 | $110,906 |
| Otsuka Pharmaceutical Co., Ltd. | 28 | $26,265 |
| Amgen | 4 | $20,312 |
| Merck | 27 | $19,520 |
| Johnson & Johnson | 16 | $9,288 |
| Boehringer Ingelheim | 7 | $8,832 |
| Boehringer Ingelheim International GmbH | 4 | $6,608 |
| Otsuka America Pharmaceutical, Inc. | 6 | $4,938 |
| Pfizer | 1 | $4,500 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | 4 | $4,313 |
| SK Life Science, Inc. | 1 | $3,200 |
| Biogen | 1 | $3,101 |
| Alkermes, Inc. | 2 | $2,419 |
| AbbVie | 3 | $805 |
| Jazz Pharmaceuticals Inc. | 1 | $50 |
| Neurocrine Biosciences, Inc. | 1 | $28 |
| Axsome Therapeutics, Inc. | 1 | $21 |
| Novo Nordisk | 1 | $19 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
- CAPLYTA$108,310
- REXULTI$27,598
- SPRAVATO$9,018
- PRISTIQ$4,500
- Cenobamate$3,200
How this compares
$225,125 in reported general payments places this provider in the 95th percentile of 209 psychiatry providers in Rhode Island.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Bupropion XlBupropion Hcl | 41 | $1,599 |
| Duloxetine Hcl | 40 | $1,020 |
| Venlafaxine Hcl ErVenlafaxine Hcl | 22 | $822 |
| Bupropion Hcl SrBupropion Hcl | 24 | $758 |
| Quetiapine Fumarate | 14 | $475 |
| Methylphenidate Hcl | 16 | $409 |
| Clonazepam | 67 | $372 |
| Sertraline Hcl | 19 | $322 |
| Lorazepam | 27 | $267 |
| Aripiprazole | 17 | $198 |
| Citalopram HbrCitalopram Hydrobromide | 23 | $135 |
| Trazodone Hcl | 11 | $115 |
| Diazepam | 20 | $108 |
| Risperidone | 16 | $105 |
Paid to pharmacies, not to this prescriber.
Other psychiatry in Cranston
- Richard MillerCranston$864K
- Gene JacobsCranston$27K
- John RuggianoCranston$9K
- Maria GonzalezCranston$4K
- Wajahat FaheemCranston$400
- Warren OngWarwick$807K
- James GreerProvidence$780K
- Liliya KoyfmanWarwick$110K
- Linda CarpenterProvidence$37K
- Terrie MailhotWarwick$26K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.