Matthew Iammatteo, MD
Obstetrics & Gynecology · Morristown, NJNPI 1346203593
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $23,950 of the $26,081 with a category attached, or 91.8%. Celularity Inc. accounts for 92.0% of it on its own, with 28 other manufacturers making up the rest. Reporting peaked in 2019 at $9,466 and has fallen 97.8% since, to $204 in 2025. Among obstetrics & gynecology clinicians in NJ 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 174 payments — averaging $149.89 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Celularity Inc.$24K
- Medtronic$281
- Hologic Sales And Service, LLC$193
- Millicent US Inc$179
- Mayne Pharma Commercial LLC$171
- AbbVie$144
- plus $1K from 23 others
What the payments were for
- Speaking & faculty fees$23,95092%
- Food & beverage$1,9718%
- Education$1591%
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 |
|---|---|---|
| Celularity Inc. | 74 | $23,996 |
| Medtronic | 3 | $281 |
| Hologic Sales And Service, LLC | 6 | $193 |
| Millicent US Inc | 9 | $179 |
| Mayne Pharma Commercial LLC | 12 | $171 |
| AbbVie | 10 | $144 |
| Applied Medical Resources Corporation | 2 | $144 |
| Astellas Pharma US Inc | 6 | $131 |
| Agile Therapeutics, Inc. | 6 | $95 |
| Myovant Sciences Inc. | 6 | $90 |
| Pfizer | 5 | $85 |
| Sumitomo Pharma America, Inc. | 5 | $79 |
| AMAG Pharmaceuticals, Inc. | 5 | $74 |
| Therapeuticsmd, Inc. | 4 | $60 |
| Exeltis, USA Inc. | 3 | $50 |
| Avion Pharmaceuticals | 3 | $40 |
| Baxter Healthcare | 1 | $39 |
| Organon | 2 | $32 |
| Evofem Biosciences, Inc. | 2 | $31 |
| Bayer | 1 | $28 |
| Mimedx Group, Inc. | 1 | $23 |
| Sanofi Pasteur Inc. | 1 | $17 |
| Merck | 1 | $16 |
| Biohaven Pharmaceutical Holding Company Ltd. | 1 | $15 |
| Optumhealth Care Solutions, LLC | 1 | $14 |
| Vertical Pharmaceuticals, LLC | 1 | $14 |
| Pacira Pharmaceuticals Incorporated | 1 | $13 |
| Dysis Medical, Inc. | 1 | $13 |
| Minerva Surgical, Inc | 1 | $12 |
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.
- TruClear$258
How this compares
$26,081 in reported general payments places this provider in the 95th percentile of 1,242 obstetrics & gynecology providers in New Jersey.
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 |
|---|---|---|
| PremarinEstrogens, Conjugated | 16 | $6,867 |
| Estradiol | 51 | $4,008 |
| PremphaseEstrogen,con/M-Progest Acet | 15 | $3,522 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| PfizerPremarin | $85 | $6,86716 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 95th percentile of 1,242 obstetrics & gynecology providers in New Jersey.
Other obstetrics & gynecology in Morristown
- Patrick CulliganMorristown$93K
- Gregory HirschMorristown$27K
- Donia ShawMorristown$18K
- Sharon MassMorristown$7K
- Jennifer AshtonEnglewood$1.5M
- Geoffrey BowersVoorhees$228K
- Neha DeshpandePlainsboro$206K
- Paula JasionowskiVoorhees$193K
- Justin ChuraSwedesboro$179K
- Andrea VentolaFlorham Park$145K
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.