Medicare billing address
CMS Medicare provider billing file
6344 S 900 ESalt Lake City, UT 84121
CMS public data · NPI 1831175629
Dr. Gregory A Christiansen: Medicare prescribing and billing data
CMS public files list billing, prescribing, location, and participation fields for this NPI. Current plan networks, appointment availability, clinical outcomes, and patient-specific medical advice require separate verification.
CMS display name
Gregory A Christiansen, M.D.
Specialty
Credential
M.D.
NPI
1831175629
Primary source state
UT
Data retrieval date
July 28, 2026
What related Medicare data is on this site?
Utah doctorsState Doctor hubOphthalmologyState-specialty hubSalt Lake City, UTPrimary city link if this route exists
Where these numbers come from, and what they cannot tell you
Public CMS records, 2024 reporting year. These are historical Medicare fields, not proof of current coverage, appointment availability, quality, or what someone will pay.
How should you read this Doctor page?
This page shows Medicare billing and Part D prescribing data for Gregory A Christiansen, M.D. from CMS public files. It covers 2024 claims data: services billed, the beneficiary panel, and the most-prescribed Part D drugs. It does not show current coverage, appointment availability, or quality ratings.
A licensed agent, not a call center
Do your doctors and prescriptions fit before you enroll?
Peter Abilla, Licensed Medicare Insurance Sales Agent, NPN 22265186. Bring the doctors and prescriptions that matter to you, then check the details before you enroll.
What Medicare source indicators are listed for this NPI?
Medicare participating
Yes
Individual assignment
Yes
Group assignment
Yes
CMS opt-out records
0
Which practice locations appear in CMS files?
When CMS files list more than one address for the same NPI, each address stays tied to the CMS file that reported it.
Salt Lake City, UT 84121
WOLFE CLINIC INC
CMS Doctors & Clinicians file
1015 Union StBoone, IA 50036
WOLFE CLINIC INC
CMS Doctors & Clinicians file
117 E Lincoln WaySuite 100
Jefferson, IA 50129
WOLFE CLINIC INC
CMS Doctors & Clinicians file
309 E Church StMarshalltown, IA 50158
What does the Medicare billing file show?
In the 2024 CMS provider billing file, this NPI had 1,311 Medicare beneficiaries and 6,580 total services. The average beneficiary age was 77, and the average HCC risk score was 1.
Total Medicare allowed amount
$722,068.02
Total Medicare payment amount
$532,919.22
Medicare beneficiaries
1,311
Total services
6,580
Which patient-panel condition fields does CMS report?
These percentages describe the Medicare beneficiary panel in the CMS utilization file. They are not a diagnosis for any individual patient and are not a quality score.
Hyperlipidemia
72%
CMS beneficiary-panel share
Hypertension
69%
CMS beneficiary-panel share
Diabetes
27%
CMS beneficiary-panel share
Chronic kidney disease
23%
CMS beneficiary-panel share
Mood disorders
21%
CMS beneficiary-panel share
Ischemic heart disease
20%
CMS beneficiary-panel share
Where these service numbers come from, and what they cannot tell you
Amounts shown are average Medicare-approved amounts per billed unit in CMS records. What a person pays depends on current coverage and cannot be read from this table alone.
Which Medicare services appear most often?
| CMS service description | Services | Avg allowed |
|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | 1,164 | $117.80 |
| Exam of visual field with extended testing | 1,156 | $57.49 |
| Imaging of optic nerve | 1,069 | $30.74 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | 678 | $83.58 |
| Measurement of corneal curvature and depth of eye | 549 | $23.40 |
| Injection, bimatoprost, intracameral implant, 1 microgram | 492 | $202.31 |
| Removal of cataract with insertion of prosthetic lens | 481 | $261.64 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | 170 | $153.03 |
| Laser repair to improve eye fluid flow | 91 | $259.06 |
| Ultrasound scan of cornea to determine thickness | 79 | $9.63 |
Where these Part D numbers come from, and what they cannot tell you
CMS data reports historical prescription drug events attributed to NPI 1831175629. Formularies, copays, prior authorization, and step therapy rules vary by current coverage.
Which drugs did Gregory A Christiansen, M.D. prescribe most often under Medicare Part D?
| Rank | Drug | Generic name | Total claims | 30-day fills | Total drug cost |
|---|---|---|---|---|---|
| 1 | Latanoprost | Latanoprost | 3,179 | 5,290.9 | $27,399.06 |
| 2 | Brimonidine Tartrate | Brimonidine Tartrate | 1,405 | 2,721.7 | $41,211.77 |
| 3 | Timolol Maleate | Timolol Maleate | 1,261 | 2,667.9 | $13,310.22 |
| 4 | Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 1,239 | 2,377 | $20,027.94 |
| 5 | Dorzolamide Hcl | Dorzolamide Hcl | 1,038 | 1,874.7 | $16,297.42 |
| 6 | Rhopressa | Netarsudil Mesylate | 793 | 1,031.1 | $288,836.49 |
| 7 | Prednisolone Acetate | Prednisolone Acetate | 678 | 988.1 | $28,845.75 |
| 8 | Moxifloxacin | Moxifloxacin Hcl | 516 | 518.9 | $12,502.00 |
| 9 | Lumigan | Bimatoprost | 504 | 953.6 | $262,659.59 |
| 10 | Alphagan P | Brimonidine Tartrate | 314 | 531.7 | $139,580.64 |
CMS Part D records are historical aggregate claims data. They do not include current formulary status, pharmacy price, prior-authorization rules, network-directory status, or clinical-outcome data.
What background fields does CMS report?
Medical school
University Of Utah School Of Medicine
Graduation year
2000
Group/practice field
Wolfe Clinic Inc
Telehealth reported
Not reported
What can this data not tell us?
- Billing data and prescribing data come from different CMS files. Neither one measures clinical outcomes, and neither one tells you whether this doctor is in a specific plan's network.
- Part D records do not report current medication use, plan coverage, price, pharmacy availability, or plan-directory status.
- Where CMS withholds a count for privacy, we show that note instead of a number. A withheld count is not zero.
- CMS billing data does not list Medicare Advantage plan-directory status for this doctor.
- CMS service and prescribing records are historical public-use aggregates; they do not report current appointment availability, clinical outcomes, or patient-specific medical advice.
- Part D provider-and-drug records do not include current formulary status, copay amount, pharmacy price, prior-authorization rules, or step-therapy rules.
What should you verify separately?
Verify plan-directory status, drug formulary rules, pharmacy pricing, appointment availability, and clinical questions against current plan documents and the relevant provider or care team.
Which CMS sources support this page?
The numbers above come from CMS public-use files for this NPI. Each link identifies the CMS release used and the retrieval date.
- Medicare Physician & Other Practitioners - by Provider · 1 records for this NPI · retrieved July 28, 2026
- Medicare Physician & Other Practitioners - by Provider and Service · 25 records for this NPI · retrieved July 28, 2026
- Doctors and Clinicians National Downloadable File · 6 records for this NPI · retrieved July 28, 2026
- Opt-Out Affidavits · 0 records for this NPI · retrieved July 28, 2026
- Medicare Part D Prescribers - by Provider and Drug · 34 records for this NPI · retrieved July 28, 2026
What caveats apply to this page?
- CMS billing and utilization files do not list Medicare Advantage plan networks, appointment availability, or clinical outcomes.
- Part D provider-and-drug files are historical aggregate claims data; they do not report current medication lists, plan coverage, pharmacy price, or prior-authorization rules.
- Where CMS withholds a count for privacy, we show that note instead of a number. A withheld count is not zero.