PayerParity

Sylvia Gyapong, M.D.

Diagnostic Radiology Physician · Houston, TX 77026 · NPI 1710249776 · 1 payer file

Every rate on file for Sylvia Gyapong, M.D. is for a code outside what diagnostic radiology physicians typically bill. Those rates are listed below as contracted but implausible.

Also contracted — outside this specialty’s usual billing

ServicePayer · planNegotiatedMedicare% of MedicareAmong Houston diagnostic radiology physicians, same plan
99213Office visit, established patient, low complexityAetna — Texas (office visit and psychotherapy codes only)$70.51median of 112 rows · $34.49$123.60$96.3373%not typically billed by diagnostic radiology physicians
99214Office visit, established patient, moderate complexityAetna — Texas (office visit and psychotherapy codes only)$93.56median of 112 rows · $52.17$174.66$137.4168%not typically billed by diagnostic radiology physicians
90833Psychotherapy, 30 minutes, add-on to an office visitAetna — Texas (office visit and psychotherapy codes only)$51.73median of 40 rows · $39.07$78.75$82.6863%not typically billed by diagnostic radiology physicians
90838Psychotherapy, 60 minutes, add-on to an office visitAetna — Texas (office visit and psychotherapy codes only)$94.11median of 40 rows · $72.67$132.83$138.6268%not typically billed by diagnostic radiology physicians

A payer’s file carries a rate for every code in the contract’s fee class, whether or not the clinician will ever bill it. These rows are real, and they are how the fee class shows through — but they are not evidence that Sylvia Gyapong, M.D. performs these services, and they are kept out of the benchmark above.

Sources. Aetna — Texas (office visit and psychotherapy codes only) (August 2026 extract). Each payer’s machine-readable file, joined to the national provider registry by NPI. Rates are the negotiated professional amounts — not billed charges, and not what a member owes after cost sharing. Where a file carries several contract rows for one clinician and code, the median is shown with the range and row count beneath it.

Medicare. Non-facility allowed amount, HOUSTON, Texas, Locality 18, CY2026 non-QP conversion factor, computed from RVUs and the locality’s geographic indices — not looked up from a table.

Position. Percentile of this rate among Houston clinicians in the same specialty holding a rate for the same code on the same plan; falls back to all Houston clinicians on that plan where the specialty cohort is under ten. Payers are never pooled.

Built 2026-09-03 · PayerParity