Cardiology • Longview, TX 75605 • NPI #1235333808

Dr. Jonathan Greifenkamp, MD

709 Hollybrook DR, Suite 2301, Longview, TX 75605 • +1-548-555-9404

Medical Education: Accredited U.S. Medical School (Class of 2009)

121 Active CMS HCPCS Codes

4.90/5

Waiting-Room Score

5 patient logs

$209.00

Fair Cash-Pay Benchmark

What This Doctor Actually Performs: CMS Medicare Utilization & Longview Percentiles

NPI #1235333808 • CBSA Regional • Cardiology

Dr. Jonathan Greifenkamp, MD (NPI #1235333808) practices Cardiology in Longview, TX (75605) with sub-specialty concentration in 121 Active CMS HCPCS Codes, recording 8,798 annual CMS services across 1,459 distinct beneficiaries—placing this practice as a upper-quartile active clinical volume (85.71th Longview percentile) (+1.25σ vs TX state mean, 92.54th statewide percentile).

Granular CPT/HCPCS billing distribution at 709 Hollybrook DR, Suite 2301 shows Dr. Jonathan Greifenkamp's primary concentration in Established Cardiology Consultation & Hemodynamic Review (code 99214: 1820x/yr, 85.71th local percentile) alongside 12-Lead Resting Electrocardiogram (ECG) w/ Interpretation (93000: 1341x/yr, $52–$71).

For out-of-network patients contacting +1-548-555-9404, Dr. Greifenkamp's practice posts a $209.00 GPCI self-pay consult estimate ($209.00 patient-logged median, 4.90/5 composite reality score over 5 submissions).

Credentialed as an MD specialist with 17 years post-graduation experience since completing medical school at an LCME/COCA institution (2009), Dr. Greifenkamp coordinates 121 Active CMS HCPCS Codes workups from 709 Hollybrook DR, Suite 2301 (+1-548-555-9404).

Longview Percentile 85.71th

Compared against Longview, TX Cardiology peers

TX State Percentile 92.54th

8,798 annual services across 1,459 beneficiaries

Regional Volume Z-Score +1.255σ

Standard deviations from TX Cardiology mean utilization

Top Billed HCPCS/CPT Procedures & GPCI Self-Pay Cash Benchmarks

HCPCS	Clinical Procedure Description	Annual Volume	Local Pct	Est. Cash Range
99214	Established Cardiology Consultation & Hemodynamic Review	1,820	85.71th	$133 – $182
93000	12-Lead Resting Electrocardiogram (ECG) w/ Interpretation	1,341	80.71th	$52 – $71
93306	Complete Transthoracic Echocardiography w/ Doppler & Color Flow	862	81.71th	$249 – $341
93224	24-Hour Ambulatory ECG Rhythm Monitoring & Analysis	479	83.71th	$156 – $214
99204	Comprehensive New Patient Cardiovascular Risk Evaluation	287	88.71th	$191 – $261
96372	Therapeutic Subcutaneous/Intramuscular Injection Administration (121 HCPCS billing breadth)	4,009	85.71th	$120 – $174

Are you Dr. Jonathan Greifenkamp? Embed your Official DotMD Verification Badge (0-JS SVG)

Paste this lightweight SVG snippet onto your clinic bio page in Longview, TX:

<a href="https://dotmd.com/doctors/jonathan-greifenkamp-md-longview-tx-1235333808" title="Dr. Jonathan Greifenkamp, MD - Verified CMS Utilization on DotMD"><img src="https://dotmd.com/badges/npi/1235333808.svg" alt="Dr. Jonathan Greifenkamp Cardiology Badge" width="280" height="72" /></a>

Dr. Jonathan Greifenkamp, MD Fair Cash-Pay & Waiting-Room Scorecard

Metric	Verified Benchmark	Source
Dr. Greifenkamp National Provider Identifier	NPI #1235333808 (MD)	CMS NPPES Registry (75605)
Dr. Greifenkamp Longview CMS Volume Rank	85.71th Pct (8,798 CMS svcs; Z +1.255σ)	CMS Medicare Part B (TX Cardiology)
Fair Cash-Pay New-Patient Benchmark	$209.00 (CPT 99204 GPCI Benchmark)	CMS Geographic Practice Cost Index (Longview, TX)
Waiting-Room Wait Time & Cash Friendliness	$209.00 avg paid • 9 min lobby wait	5 Anonymous Patient Reports
Listens Without Rushing & Modern Protocol Score	4.67/5 Listening • 4.49/5 Modern Labs	CMS Provider Practice Cohort

Patient-Reported Clinic Experience

“Waiting Room” Patient Reality Scorecard

Real Wait Time

9 min

Lobby check-in to exam room

Cash-Pay Friendliness

Upfront Self-Pay

GPCI fair visit est. $209.00

Listens Without Rushing

4.67/5

Patient communication rating

Modern Protocol Openness

4.49/5

Preventive labs, GLP-1s & HRT

Transparent AI Research Council • Grounded on NIH / FDA / PubMed Data

Ask our AI Specialists anything about Dr. Jonathan Greifenkamp

3 of 3 Free Questions Remaining

Other High-Volume Cardiology Specialists in Longview, TX

Ranked strictly by CMS Medicare volume

Dr. Ronald Scott, MD

71.43th Longview Pct • $ 209.00 cash est.

Dr. Samir Germanwala, DO

57.14th Longview Pct • $ 209.00 cash est.

Dr. Rajeev Singh, MD

42.86th Longview Pct • $ 209.00 cash est.

Dr. Rodney Henry, MD

28.57th Longview Pct • $ 209.00 cash est.

Dr. Khashayar Vahdat, MD

14.29th Longview Pct • $ 209.00 cash est.

Dr. John Mcclish, MD

0.00th Longview Pct • $ 209.00 cash est.

Dr. Greifenkamp Waiting-Room Q&A & Patient Experience Logs

Anonymous patient-submitted wait times, cash visit fees, and bedside manner discussions in Longview, TX.

15-Second Anonymous Micro-Log (Zero-PHI Architecture)

Share your self-pay visit cost and lobby wait time—no account, email, or IP stored.

“People Like Me” Cohort Filter (Zero-PHI)

Filter Dr. Jonathan Greifenkamp community threads and patient logs by age, biological sex, dosage, and treatment duration.

No threads match this cohort filter yet. Click + Start Anonymous Discussion to ask the community about Dr. Jonathan Greifenkamp.