NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1578545638 DO
Verify on CMS → Samer Mossallam, DO
Obstetrics & Gynecology Physician in Monroe, Michigan.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 44,326 in Obstetrics & Gynecology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
334
Medicare Part D claims · 112 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Industry payments
$218.83
9 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Samer Mossallam, DO filed 334 Medicare Part D claims in 2023 as an Obstetrics & Gynecology Physician in Monroe, Michigan.
- 334
- Part D claims, 2023
- Likely
- board-certified (heuristic)
- ≥57th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
CMS NPPES provider registry desk
NPI 1578545638 · Obstetrics & Gynecology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1578545638
- ENUM-LEGACY 2005
- TAX-MID 44K Obstetrics &
- RX-LIGHT 334
- BOOK-LIGHT 1,681 in Michigan
- PHOTO-ENUM Paul Joslyn · 2005
Samer Mossallam, DO's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
334 ≥ 57th percentile 57% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Samer Mossallam, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Samer Mossallam, DO?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
334 87% vs specialty avg
Specialty distribution in Michigan
How Obstetrics & Gynecology Physician compares to other specialties among Michigan providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Obstetrics & Gynecology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1578545638 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | DO |
| Gender | Male |
| NPI Issued | 11/15/2005 |
Hospital and facility affiliations
Facilities where Samer Mossallam, DO bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Ascension Medical Group Promed
Kalamazoo, MI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Samer Mossallam, DO. Source: openpaymentsdata.cms.gov.
Total received
$219
Largest payer
Sage Therapeutics, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - Michigan MI-BOM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~41K Michigan medical licensees in 2023 - they are NOT specific to Samer Mossallam, DO. To verify Samer Mossallam, DO's current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases
MI-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
334
Total Claims
$31K
Total Drug Cost
112
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 615
- Total Day Supply
- 16,013
- Generic Drug Cost
- $15K
- Opioid Claims
- 15 (4.5% rate)
- Antibiotic Claims
- 36
Patient Demographics
- Average Patient Age
- 70.4 years
- Avg HCC Risk Score
- 0.99
- Gender Split
- 100% female / 0% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Samer Mossallam, DO prescribes most
Top Medicare Part D drugs by claim count, 2023
- Estradiol
Estradiol
31 claims
- Oxybutynin Chlorid…
Oxybutynin Chloride Er
21 claims
- Dotti
Dotti
18 claims
- Escitalopram Oxalate
Escitalopram Oxalate
17 claims
- Clotrimazole-Betam…
Clotrimazole-Betamethasone
16 claims
- Nitrofurantoin Mon…
Nitrofurantoin Mono-Macro
16 claims
- Ibuprofen
Ibuprofen
14 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
13 claims
| Drug | Claims |
|---|---|
| Estradiol | 31 |
| Oxybutynin Chloride Er Oxybutynin Chloride | 21 |
| Dotti Estradiol | 18 |
| Escitalopram Oxalate | 17 |
| Clotrimazole-Betamethasone Clotrimazole/Betamethasone Dip | 16 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 16 |
| Ibuprofen | 14 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 13 |
| Clobetasol Propionate | 11 |
| Lidocaine | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Obstetrics & Gynecology Physician Overview
How Samer Mossallam, DO fits within the Obstetrics & Gynecology Physician landscape nationally.
44,326
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider
Samer Mossallam, DO's 334 claims are above the specialty average of 179.
Nationwide Obstetrics & Gynecology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Mossallam, both outside Michigan so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Obstetrics & Gynecology Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Mossallam.
One of 1,681 Obstetrics & Gynecology Physician providers enrolled in Michigan, 5 are shown here.
Dr. Bryan Aaron
MD
Ann Arbor, MI
Dr. Mushtak Abbou
MD
Royal Oak, MI
Dr. Youstina Abdallah
MD
Grand Rapids, MI
Dr. Adib Abdelrahman
D.O.
Pontiac, MI
Dr. Anan Abdelrahman
MD
Pontiac, MI
Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Samer Mossallam, DO's specialty? ▼
Samer Mossallam, DO specializes in Obstetrics & Gynecology Physician and practices in Monroe, Michigan. Credentials: DO.
How much does Samer Mossallam, DO prescribe under Medicare Part D? ▼
In 2023, Samer Mossallam, DO wrote 334 Medicare Part D claims totaling $31K in drug costs for 112 beneficiaries.
Where is Samer Mossallam, DO located? ▼
Samer Mossallam, DO is located at 1046 N MONROE ST, Monroe, MI, 48162. Phone: (734) 457-9034.
What is Samer Mossallam, DO's NPI number? ▼
Samer Mossallam, DO's National Provider Identifier (NPI) is 1578545638, issued on 11/15/2005.
Does Samer Mossallam, DO prescribe opioids? ▼
Yes, Samer Mossallam, DO had 15 opioid claims in 2023 with an opioid prescribing rate of 4.5%.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,326 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does Samer Mossallam, DO prescribe most often? ▼
Based on 2023 Medicare Part D data, Samer Mossallam, DO's most frequently prescribed drugs include Estradiol, Oxybutynin Chloride Er, Dotti. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Samer Mossallam, DO accept Medicare? ▼
Samer Mossallam, DO appears in CMS Medicare data with 334 Part D claims and 112 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Samer Mossallam, DO's credentials? ▼
Samer Mossallam, DO's NPI is 1578545638 with credentials DO. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.