Dr. Lauren L. Buyan, DO

  • Rapid City, SD
  • Emergency medicine physician
NPI1083148175PAC ID1456689298
Medicare services, 2024
1,429
Medicare patients, 2024
856
Part D claims, 2024
153
MIPS score, 2024
96
Hospital affiliations
4
Practice address
353 Fairmont Blvd, Rapid City, SD 57701
Practice phone
Call (605) 755-1000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Monument Health Rapid City Hospital

Hospital · Rapid City, South Dakota

See all 7 affiliations

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Dr. Lauren L. Buyan is an emergency medicine physician in Rapid City, South Dakota

Dr. Buyan practices at Monument Health Rapid City Hospital in Rapid City, South Dakota, part of Monument Health.

Dr. Buyan's NPI, 1083148175, was assigned on April 14, 2017. Dr. Buyan holds South Dakota license 13629.

NPI and contact details
Medicare PAC ID
1456689298
NPI enumeration date
April 14, 2017
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(605) 755-1000
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
33
Medical school graduation
2019

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Lauren L. Buyan practices at Monument Health Rapid City Hospital in Rapid City, South Dakota

Dr. Buyan's primary practice is Monument Health Rapid City Hospital, at 353 Fairmont Blvd, Rapid City, SD 57701 in Pennington County. The practice phone is (605) 755-1000.

Source: Dmand AI Affiliation Data

Dr. Lauren L. Buyan is affiliated with 4 sites of care and 3 medical groups

Dr. Buyan's primary practice is Monument Health Rapid City Hospital in Rapid City, South Dakota, part of Monument Health. Dr. Buyan is also affiliated with Monument Health Custer Hospital. The medical group on file is Rapid City Emergency Services. Dmand AI also links Dr. Buyan to 2 more hospitals and 2 medical groups, each named with a free account.

See all 7 affiliations for Dr. Buyan

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Lauren L. Buyan's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Buyan practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Monument Health Rapid City HospitalAvailable with a free account
+3 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Lauren L. Buyan is one of 140 emergency medicine physicians in South Dakota

Emergency medicine is Dr. Buyan's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Buyan's licenses on file in 2 states: South Dakota and Nebraska.

Specialties and state licenses

  • Emergency medicine, South DakotaPrimaryLicense 13629 · taxonomy 207P00000X
  • Nebraska licenseLicense 8618

Emergency medicine physicians near Dr. Buyan

Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Lauren L. Buyan billed Medicare for 1,429 services in 2024

CMS data shows 1,429 Medicare services from Dr. Buyan across 5 procedure codes in 2024, for 856 Medicare patients. Medicare paid $110,541 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20241,429
Medicare patients856
Paid by Medicare$110,541
Procedure codes5

Dr. Buyan's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 8802024: 876No change
Tests and treatments
2023: 5712024: 5533%

Dr. Buyan compared with the South Dakota median for emergency medicine physicians, 2024

  • Dr. Buyan
  • South Dakota median
Medicare services
1,429vs 2845.0 times
Medicare patients
856vs 2713.2 times
Part D claims
78vs 282.8 times

Medians across 138 emergency medicine physicians in South Dakota with Dmand AI profiles that report each measure.

Dr. Buyan's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Lauren L. Buyan treated 856 Medicare patients in 2024, average age 74

CMS counts 856 Medicare patients who saw Dr. Buyan in 2024. The largest group is 65 to 74, with 296 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 22% are also on Medicaid. Their average risk score is 1.92, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Buyan's median patient age at 72, with 59% women.

Medicare patients, 2024856
Average age74
Average risk score1.92
Also on Medicaid22%

Dr. Buyan's Medicare patients by age, 2024

Dr. Buyan's Medicare patients by sex, 2024

  • Women49758%
  • Men35942%

Chronic conditions among Dr. Buyan's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol74%
  3. Arthritis48%
  4. Diabetes37%
  5. Ischemic heart disease37%
  6. Mood disorders34%
  7. Anxiety33%
  8. Chronic kidney disease33%

Share of Medicare patients with each condition. A patient can have several.

Dr. Buyan's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 72

Patient panel by sex, all payers

  • Women59%
  • Men41%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Lauren L. Buyan wrote 153 Medicare Part D claims in 2024

In 2024, Dr. Buyan wrote 153 Medicare Part D claims for 129 patients. 95% of them were for generic drugs. CMS names the drug for 78 of them, across 4 drugs with 11 or more claims each, at $506 in total drug cost. In 2023, CMS named 44 claims across 2 drugs.

Part D claims, 2024153
Drugs named by CMS4
Total drug cost$506
Part D patients129

Dr. Buyan's Part D claims by kind of drug, 2024

  • Generic146 claims95%
  • Brand-name and other7 claims5%

Dr. Buyan's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Buyan's Part D claims, 2024

  • Antibiotics52%80 of 153 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 442024: 7877%

Drugs named by CMS: 4 in 2024, 2 in 2023.

See all prescribing by Dr. Buyan

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Lauren L. Buyan scored 96 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Dr. Buyan for performance year 2024, reported as part of a group. Dr. Buyan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Buyan's MIPS scores, performance year 2024

  • 96of 100Final score
  • 99of 100Quality
  • 40of 100Improvement Activities
  • 78of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Sources for Dr. Lauren L. Buyan's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Lauren L. Buyan

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Lauren L. Buyan's NPI number?

Dr. Lauren L. Buyan's NPI number is 1083148175. It was assigned on April 14, 2017, and it is active in the NPI Registry.

What kind of doctor is Dr. Lauren L. Buyan?

Dr. Lauren L. Buyan is an emergency medicine physician in Rapid City, South Dakota. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).

Where does Dr. Lauren L. Buyan practice?

Dr. Buyan practices at 353 Fairmont Blvd, Rapid City, SD 57701. Dr. Buyan's primary practice is Monument Health Rapid City Hospital in Rapid City, South Dakota, part of Monument Health. Dmand AI also links Dr. Buyan to 2 hospitals and 2 medical groups.

What is Dr. Lauren L. Buyan's office phone number?

The practice phone on file for Dr. Buyan is (605) 755-1000.

What is Dr. Lauren L. Buyan's medical license number?

Dr. Buyan holds South Dakota license 13629, one of the licenses on file in 2 states.

Which states has Dr. Lauren L. Buyan been licensed in?

Dmand AI has state licenses on file for Dr. Buyan in South Dakota and Nebraska.

Which hospitals is Dr. Lauren L. Buyan affiliated with?

Dr. Buyan practices at Monument Health Rapid City Hospital in Rapid City, South Dakota. Dr. Buyan is also affiliated with Monument Health Custer Hospital. Dmand AI links Dr. Buyan to 2 more hospitals.

What medical group is Dr. Lauren L. Buyan part of?

Dr. Buyan is linked to Rapid City Emergency Services. Dmand AI links Dr. Buyan to 2 more medical groups.

Does Dr. Lauren L. Buyan accept Medicare?

Yes. CMS data shows Dr. Buyan billed Medicare for 1,429 services in 2024, and Dr. Buyan accepts Medicare assignment.

What is Dr. Lauren L. Buyan's MIPS score?

Dr. Buyan's MIPS final score for performance year 2024 is 96 out of 100, reported as part of a group.

Show 4 more questionsShow fewer questions

How many Medicare patients does Dr. Lauren L. Buyan see?

CMS counts 856 Medicare patients who saw Dr. Buyan in 2024, with an average age of 74.

What services does Dr. Lauren L. Buyan bill to Medicare?

In 2024, Dr. Buyan's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and critical care (99291).

What drugs does Dr. Lauren L. Buyan prescribe most?

In 2024 Medicare Part D data, Dr. Buyan's most prescribed drugs by claims were Cephalexin, Doxycycline Monohydrate and Prednisone.

How long has Dr. Lauren L. Buyan been practicing?

Dr. Buyan graduated from medical school in 2019, 7 years ago.

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