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Family Practice

Mara M. Groom, DO

Works at hospitals in Spirit Lake, IA · Iowa

Summary

Dr. Mara M. Groom, DO is a family doctor at 2301 Hwy 71, Spirit Lake, IA 51360. Phone: (712) 336-3750. Accepts Medicare assignment. In 2024, Mara M. Groom had 460 Original Medicare patients and 2,843 services. NPI 1437599297. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 2301 Hwy 71, Spirit Lake, IA 51360 · Directions (1 more location)
  • Phone: (712) 336‑3750
  • Medicare: Accepts Medicare assignment
  • Hospital: Lakes Regional Healthcare
  • Group practice: Lakes Regional Healthcare
  • Medical school: graduated 2013 (13 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Mara M. Groom, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Mara M. Groom accept Medicare assignment?
Yes. Medicare's clinician data says Mara M. Groom accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Mara M. Groom see?
In 2024, CMS data shows 460 Original Medicare patients and 2,843 services for Mara M. Groom. This counts Original Medicare only and measures volume, not quality.
What is Mara M. Groom's NPI number?
1437599297. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Mara M. Groom, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients460
Services billed to Medicare2,843
Different services or procedures39
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)397 services
  2. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)349 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)206 services
  4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)112 services
  5. Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit (G0438)76 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure65%
  • High cholesterol60%
  • Arthritis42%
  • Anxiety27%
  • Chronic kidney disease24%
  • Depression23%

Hospitals where Mara M. Groom works

Medicare's Facility Affiliation Data lists Mara M. Groom at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Lakes Regional HealthcareSpirit Lake, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160124

Practice locations

Addresses where Mara M. Groom is enrolled with Medicare (CMS data updated October 2, 2026).

  • 2301 Hwy 71Spirit Lake, IA 51360
  • 2301 Hwy 71, Suite CSpirit Lake, IA 51360 (712) 336‑3750

Group practices

Medicare enrollment lists Mara M. Groom as a member of this group (CMS data updated October 2, 2026).

  • Lakes Regional Healthcare38 clinicians in the group

Specialties

Find other Family Practice doctors in Iowa →

Other family doctors in Spirit Lake

Clinicians with the same Medicare primary specialty in Spirit Lake, IA — not a recommendation.

All family doctors in Spirit Lake →

Other clinicians in Lakes Regional Healthcare

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Graduation year2013 (13 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1437599297
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians