NPI registry status
Active
2026 NPPES data Colon & Rectal Surgery Physician NPI 1386898872 M.D.
Verify on CMS → Molly Gross, M.D.
Colon & Rectal Surgery Physician in Des Moines, Iowa.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,642 in Colon & Rectal Surgery 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
142
Medicare Part D claims · 77 beneficiaries · Colon & Rectal Surgery Physician avg: 210
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Molly Gross, M.D. filed 142 Medicare Part D claims in 2024 as a Colon & Rectal Surgery Physician in Des Moines, Iowa, prescribing 92% generic.
- 142
- Part D claims, 2024
- 92%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥34th
- 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.
Federal trust snapshot
What official records show about Molly Gross, M.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1386898872), first enumerated 11/10/2008.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 142 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1386898872 · Colon & Rectal Surgery Physician
NPI-10 · ENUM-MID · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1386898872
- ENUM-MID 2008
- TAX-NARROW 1,642
- RX-LIGHT 142
- BOOK-THIN 11 in Iowa
- PHOTO-ENUM Rahul Narang, M.D. · 2008
Molly Gross, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
142 ≥ 34th percentile 34% of 1,416,883 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 · 2024
✓
Board certification likely (heuristic, not verified)
Molly Gross, M.D. 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 Molly Gross, M.D.?
Quality data not reportedPrimary specialty
Colon & Rectal Surgery Physician
Medicare Part D claims
142 32% vs specialty avg
Specialty distribution in Iowa
How Colon & Rectal Surgery Physician compares to other specialties among Iowa 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 Colon & Rectal Surgery 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 | 1386898872 |
|---|---|
| Specialty | Colon & Rectal Surgery Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 11/10/2008 |
Hospital and facility affiliations
Facilities where Molly Gross, M.D. 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.
The Iowa Clinic PC
Des Moines, IA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
Molly Gross, M.D. - brand share 8.0%
Colon & Rectal Surgery Physician average
8% brand-name claims vs 92% generic, on 142 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
142
Total Claims
$4K
Total Drug Cost
77
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 147.4
- Total Day Supply
- 903
- Brand vs Generic
- 8% brand / 92% generic
- Brand Drug Cost
- $537
- Generic Drug Cost
- $3K
- Antibiotic Claims
- 64
Patient Demographics
- Average Patient Age
- 73.5 years
- Avg HCC Risk Score
- 1.45
- Gender Split
- 66% female / 34% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Molly Gross, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Sod Sulf-Potass Su…
Sod Sulf-Potass Sulf-Mag Sulf
44 claims
- Metronidazole
Metronidazole
29 claims
- Neomycin Sulfate
Neomycin Sulfate
26 claims
| Drug | Claims |
|---|---|
| Sod Sulf-Potass Sulf-Mag Sulf Sodium, Potassium,mag Sulfates | 44 |
| Metronidazole | 29 |
| Neomycin Sulfate | 26 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Colon & Rectal Surgery Physician Overview
How Molly Gross, M.D. fits within the Colon & Rectal Surgery Physician landscape nationally.
1,642
Colon & Rectal Surgery Physician Providers in US
50
States with Colon & Rectal Surgery Physician
210
Avg Claims per Provider
Molly Gross, M.D.'s 142 claims are below the specialty average of 210.
Nationwide Colon & Rectal Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Gross, both outside Iowa so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Colon & Rectal Surgery Physician Providers in Iowa
Other clinicians with the same primary specialty enrolled in Iowa, drawn from the same CMS NPPES roster as Gross.
One of 11 Colon & Rectal Surgery Physician providers enrolled in Iowa, 5 are shown here.
Dr. Paula Beckwith
M.D.
Des Moines, IA
Dr. Ohmar Coughlin
M.D.
Des Moines, IA
Dr. John Cromwell
MD
Iowa City, IA
Dr. Maysoon Gamaleldin
M.D
Iowa City, IA
Dr. Alexander Menning
DO
Des Moines, IA
Compare Colon & Rectal Surgery Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Molly Gross, M.D.'s specialty? ▼
Molly Gross, M.D. specializes in Colon & Rectal Surgery Physician and practices in Des Moines, Iowa. Credentials: M.D..
How much does Molly Gross, M.D. prescribe under Medicare Part D? ▼
In 2024, Molly Gross, M.D. wrote 142 Medicare Part D claims totaling $4K in drug costs for 77 beneficiaries.
Where is Molly Gross, M.D. located? ▼
Molly Gross, M.D. is located at 1212 PLEASANT ST STE 211, Des Moines, IA, 50309. Phone: (515) 875-9770.
What is Molly Gross, M.D.'s NPI number? ▼
Molly Gross, M.D.'s National Provider Identifier (NPI) is 1386898872, issued on 11/10/2008.
Does Molly Gross, M.D. prescribe more brand-name or generic drugs? ▼
Molly Gross, M.D.'s prescribing is 8% brand-name and 92% generic drugs by claim count, with $537 in brand drug costs.
How many Colon & Rectal Surgery Physician providers are there in the US? ▼
There are 1,642 Colon & Rectal Surgery Physician providers across 50 states in the US. The average Colon & Rectal Surgery Physician provider writes 210 Medicare Part D claims per year.
What drugs does Molly Gross, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Molly Gross, M.D.'s most frequently prescribed drugs include Sod Sulf-Potass Sulf-Mag Sulf, Metronidazole, Neomycin Sulfate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Molly Gross, M.D. accept Medicare? ▼
Molly Gross, M.D. appears in CMS Medicare data with 142 Part D claims and 77 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Molly Gross, M.D.'s credentials? ▼
Molly Gross, M.D.'s NPI is 1386898872 with credentials M.D.. 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.